Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doc chieu » doc hieu, doi chieu, toc thieu
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
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 va) OR (trinh ve)) trong cong san hang dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc chieu tinh - hanh ((trinh va) OR (trinh ve)) trong cong san hang dau*".