Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
theo chieu » theo tieu, theo chu, thi chieu
trung tuan » trung thanh, trung tam, tran tuan
duong manh » duong van
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » hoc thieu, doi chieu, mot chieu
toan ban » van ban
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: ((ho chieu) OR (theo chieu)) sach - hanh ((ban cua) or (trung tuan)) nhung duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh ((ban cua) OR (trung tuan)) nhung duong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh ((ban cua) or (trung tuan)) nhung duong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh ((ban cua) or (trung tuan)) nhung duong manh toan ban*.