Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
thi chieu » thi chien, thi hieu, theo chieu
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (thi chieu)) sach - hanh tranh ((cua dung) OR (qua dung)) cong tan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi chieu)) sach - hanh tranh ((cua dung) OR (qua dung)) cong tan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (thi chieu)) sach - hanh tranh ((cua dung) OR (qua dung)) cong tan than ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) sach - hanh tranh ((cua dung) OR (qua dung)) cong tan than ban*.