Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
chua nang » chuc nang, chua xang, kha nang
hanh dang » hanh dong, anh dang, hanh dung
dang van » hoang van, hang va
san toan » van toan, dan toan, manh toan
toan ban » van ban
chu han » chu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu han) or (chua nang)) - hanh dang van ((nhung cong) OR (thong cong)) san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu han) OR (chua nang)) - hanh dang van ((nhung cong) OR (thong cong)) san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu han) or (chua nang)) - hanh dang van ((nhung cong) OR (thong cong)) san toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chu han) or (chua nang)) - hanh dang van ((nhung cong) OR (thong cong)) san toan ban*.