Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doc chieu » doc hieu, doi chieu, toc thieu
trung cap » truong cao, trung tam
dung cong » dung trong
trung ap » trung lap, trung tam, trung dai
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu tinh - thanh ((trung ap) or (trung cap)) dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu tinh - thanh ((trung ap) OR (trung cap)) dung cong tan toan cau*.