Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh van » trinh han, trinh quan, trinh toan
dang cong » dung cong
van dang » van dong, van dung, van nang
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh trinh van dang cong ((dan toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trinh van dang cong ((dan toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trinh van dang cong ((dan toan) or (van tuan)) cau*.