Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
dung cong » dung trong
manh cua » doanh cua
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap
ban cua » ban quan

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

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