Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, hieu lang, nhiet nang
thong cong » trong cong, tong cong, thong thong
hang hoach » thanh hoach, hang hoa, hang doanh
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
hieu van » hieu va, thien van, lieu va
cong san » cong tac
san hang » san chang, ban hang, van hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((nhieu tang) or (hieu van)) - thanh trung cua thong cong san hang hoach~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((nhieu tang) OR (hieu van)) - thanh trung cua thong cong san hang hoach.
• Adding a wildcard symbol may retrieve word variants: doi ((nhieu tang) or (hieu van)) - thanh trung cua thong cong san hang hoach*.