Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
lanh trang » hanh trang, banh trang, lanh tranh
trang va » tran van, hang va
va trong » va truong, va thong, va tuong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, 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: theo tieu trinh - lanh trang va trong cong dan phan dau~.
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - lanh trang va trong cong dan phan dau*.