Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh trang » canh tranh, hanh trang, banh trang
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » tran van, hang va
va trong » va truong, va thong, va tuong
cong san » cong tac
phan dau » hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - canh trang va trong cong san ((phan dau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - canh trang va trong cong san ((phan dau) OR (phan tu))".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh trang va trong cong san ((phan dau) OR (phan tu))*.