Perhaps you should try some spelling variations:
chua xang » chua nang, chuc nang, chu bang
dung cong » dung trong
chu manh » ho manh, chu han, chu van
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: sua ((chu manh) or (chua xang)) - hanh ((tang cua) OR (mang cua)) dung cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: sua ((chu manh) OR (chua xang)) - hanh ((tang cua) OR (mang cua)) dung cong tan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "sua ((chu manh) or (chua xang)) - hanh ((tang cua) OR (mang cua)) dung cong tan than tap".
• Adding a wildcard symbol may retrieve word variants: sua ((chu manh) or (chua xang)) - hanh ((tang cua) OR (mang cua)) dung cong tan than tap*.