Perhaps you should try some spelling variations:
bang bang » big bang
lang yan » wang yan, wang yang, zhang yan
one week » one we, one were, one when
hoang sy » hoang vu
one web » one we, one were, one when
yang vu » yang du, hoang vu, yang jui
yang mu » yang du, yang muxi, yang jui

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: ((lang yan) OR (bang bang)) 2 ((one week) OR (one web)) ((yang vu) OR (yang mu)) hoang sy ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lang yan) or (bang bang)) 2 ((one week) OR (one web)) ((yang vu) or (yang mu)) hoang sy ;~".
• Adding a wildcard symbol may retrieve word variants: ((lang yan) or (bang bang)) 2 ((one week) OR (one web)) ((yang vu) or (yang mu)) hoang sy ;*.