Perhaps you should try some spelling variations:
using phase » using past, closing phase, testing phase
att using » cut using, et using, out using
tan yang » dan yang, tan ying, tan yong
time att » time art, time a, time age
robert b » robert _, robert j, robert a
robert e » robert _, robert j
un yang » daun yang, dan yang, hui yang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tan yang) OR (un yang)) 3 time att using phase ((robert b) OR (robert e)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan yang) or (un yang)) 3 time att using phase ((robert b) OR (robert e)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan yang) or (un yang)) 3 time att using phase ((robert b) OR (robert e)) ;*.