Perhaps you should try some spelling variations:
luong cong » dung cong, trong cong, cong cong
thi chieu » thi chien, thi hieu, theo chieu
trung dai » truong dai, truong dao, trung cap
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai
theo chu » theo chieu, cho chu, chao chu
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (theo chu)) xanh - hanh ((trung dai) OR (trung tam)) luong cong dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo chu)) xanh - hanh ((trung dai) OR (trung tam)) luong cong dan thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (theo chu)) xanh - hanh ((trung dai) OR (trung tam)) luong cong dan thanh lap".
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo chu)) xanh - hanh ((trung dai) OR (trung tam)) luong cong dan thanh lap*.