Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - manh ((trung va) or (trung ha)) dung cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - manh ((trung va) OR (trung ha)) dung cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - manh ((trung va) or (trung ha)) dung cong tan than cau*.