Perhaps you should try some spelling variations:
hieu tinh » chieu tinh, lieu tinh, kieu tinh
hanh tran » hanh trang, thanh tran, hanh tram
cau trong » cau truong, cay trong, chu trong
doc hieu » toc thieu, hoc thieu, hoc hien
tran cau » tran chau, toan cau, ran cau
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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