Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
tieu danh » dieu danh, tiep danh, thien danh
manh tung » manh hung, thanh tung
cong tac » cong ty
tac tren » rac tren, tai tren, tap tren
tren tau » tren thuc, tren may, tren dat

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 danh - ((manh tung) or (hanh trang)) va nhung cong tac tren tau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu danh - ((manh tung) OR (hanh trang)) va nhung cong tac tren tau*.