Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doc chieu » doc hieu, doi chieu, toc thieu
trinh van » trinh han, trinh quan, trinh toan
trinh ve » trinh he, trinh va, trinh vi
cong san » cong tac
san hang » san chang, ban hang, van hang
hang dau » hang va, hang tai

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 - hanh ((trinh van) or (trinh ve)) trong cong san hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu tinh - hanh ((trinh van) OR (trinh ve)) trong cong san hang dau.
• Adding a wildcard symbol may retrieve word variants: doc chieu tinh - hanh ((trinh van) or (trinh ve)) trong cong san hang dau*.