Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
hanh tram » hanh tam, hanh trang, thanh tran
dang cong » dung cong
tram van » tran van, tam van, trang van
van dang » van dong, van dung, van nang
cong tac » cong ty
phan tap » han tap, phan tu, toan tap
phan lap » phan dau
pha tap » pham tai

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 tram van dang cong tac ((((phan tap) or (pha tap))) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh tram van dang cong tac ((((phan tap) OR (pha tap))) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh tram van dang cong tac ((((phan tap) or (pha tap))) or (phan lap))*.