Perhaps you should try some spelling variations:
thanh trang » thanh trung, hanh trang, thanh tran
thanh thang » nhanh thang, thanh thanh, thanh hang
nhiet nang » nhiet dong, viet nang, nhieu tang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
va thong » va thuong, va phuong, he thong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (nhiet nang)) - ((thanh trang) OR (thanh thang)) va thong cong tac tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhiet nang)) - ((thanh trang) OR (thanh thang)) va thong cong tac tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (nhiet nang)) - ((thanh trang) OR (thanh thang)) va thong cong tac tran cao".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhiet nang)) - ((thanh trang) OR (thanh thang)) va thong cong tac tran cao*.