Perhaps you should try some spelling variations:
wing tan » wing ian, liang tan, hong tan
yang hui » yang jui, wang hui, yang muxi
yang jun » yang jui, pang jun, yang jin
using hg » using hs, using high, using ahp
yang yi » yang xi, yang jui
line a » line _, line 1, line 3
a when » 3 when, 4 when, 1 when

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing tan ((yang hui) or (((yang jun) or (((yang yi) or (yang di)))))) line a when using hg ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing tan ((yang hui) OR (((yang jun) OR (((yang yi) OR (yang di)))))) line a when using hg ;.
• Adding a wildcard symbol may retrieve word variants: wing tan ((yang hui) or (((yang jun) or (((yang yi) or (yang di)))))) line a when using hg ;*.