Perhaps you should try some spelling variations:
chieu manh » chieu xanh, chu manh, chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh tran » manh toan, manh tuan, canh tranh
hang cong » dang cong, hang nong, bang cong
tran van » luan van
van hang » van khang, van hoang, van thang
cong ban » cong bang, cong san, cong tan
ban hang » ngan hang
hang ca » hang va, nang cao, hang tai

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 manh) or (chieu manh)) - manh tran van hang cong ban hang ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (chieu manh)) - manh tran van hang cong ban hang ca*.