Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh dung » thanh dung, anh dung, hanh dong
hang nong » thang long, han tong
ho chieu » hoc thieu, doi chieu, mot chieu
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan
va hang » van hang, va nang, va lang

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 (ho chieu)) sach - hanh dung va hang nong ((van toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - hanh dung va hang nong ((van toan) OR (van tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - hanh dung va hang nong ((van toan) or (van tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - hanh dung va hang nong ((van toan) or (van tuan)) cau*.