Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu tinh » chieu tinh, lieu tinh, kieu tinh
trang cam » trang cham, trang lam, trang va
cam trong » cam truong, cay trong, nam trong
thanh cac » hanh cac, thanh bac, thanh ca
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
than cap » khan cap, thanh lap, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu tinh - hanh trang cam trong cong san ((((than cap) or (thanh san))) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - hanh trang cam trong cong san ((((than cap) OR (thanh san))) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - hanh trang cam trong cong san ((((than cap) or (thanh san))) or (thanh cac))*.