Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua xang » chua nang, chuc nang, chu bang
chu manh » ho manh, chu han, chu van
thang va » hang va, thong va, thanh va
trang va » tran van, hang va
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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 manh) or (chua xang)) - nhanh ((thang va) OR (trang va)) nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu manh) OR (chua xang)) - nhanh ((thang va) OR (trang va)) nhung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu manh) or (chua xang)) - nhanh ((thang va) OR (trang va)) nhung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) or (chua xang)) - nhanh ((thang va) OR (trang va)) nhung cong tac toan cao*.