Perhaps you should try some spelling variations:
zhang mining » zhang ming, ghana mining, than mining
mining using » meaning using, mining during, making using
using seng » using self, song seng, using se
p.w best » 3.2 best, how best, 4.2 best
2.2 test » 3.2 test, 4.2 test, 2.2 task
wang » wing, wan, lang
yan » yang, ryan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan lanka ((p.w best) or (((2.2 test) OR (2.2 trust)))) zhang mining using seng ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan lanka ((p.w best) OR (((2.2 test) OR (2.2 trust)))) zhang mining using seng ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan lanka ((p.w best) or (((2.2 test) OR (2.2 trust)))) zhang mining using seng ;".
• Adding a wildcard symbol may retrieve word variants: wang yan lanka ((p.w best) or (((2.2 test) OR (2.2 trust)))) zhang mining using seng ;*.