Perhaps you should try some spelling variations:
hieu tinh » chieu tinh, lieu tinh, kieu tinh
hanh tran » hanh trang, thanh tran, hanh tram
huu trong » luu trong, hue trong, huu thong
doc hieu » toc thieu, hoc thieu, hoc hien
tran huu » tran duc
cong dan » cong san, cong tan, huong dan
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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 tran huu trong cong dan can cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - hanh tran huu trong cong dan can cau*.