Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
tan thanh » tran thanh, tang thanh, toan thanh
thanh lap » thanh san, phan lap, thanh hai
trung ha » trung hoc, trung cap
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - hanh ((trung ha) or (trung tam)) thong cong tan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh ((trung ha) OR (trung tam)) thong cong tan thanh lap.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh ((trung ha) or (trung tam)) thong cong tan thanh lap*.