Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trung cap » truong cao, trung tam
yen tinh » tuyen tinh
cong tac » cong ty
tac ha » bac ha, tac da, tac xa
ha che » han che, pha che, va che

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((lieu tinh) or (yen tinh)) - thanh ((trung cap) or (truong dai)) nhung cong tac ha che~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (yen tinh)) - thanh ((trung cap) OR (truong dai)) nhung cong tac ha che.
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) or (yen tinh)) - thanh ((trung cap) or (truong dai)) nhung cong tac ha che*.