Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hang hoach » thanh hoach, hang hoa, hang doanh
hieu sang » chieu sang, hieu lang, hieu quang
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan hang » tan khang, 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: doc hieu sang - thanh ((trung cua) or (trung cap)) nhung cong tan hang hoach~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - thanh ((trung cua) OR (trung cap)) nhung cong tan hang hoach.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - thanh ((trung cua) or (trung cap)) nhung cong tan hang hoach*.