Perhaps you should try some spelling variations:
truong thong » truong thuong, truong trong, truong phuong
theo chieu » theo tieu, ho chieu, thi chieu
tranh cac » trinh cac, thanh cac, tranh cai
van thanh » ban thanh, van tuan
theo chu » cho chu, chao chu, theo yeu
van toan » van tuan, van tan, manh toan

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 (theo chu)) sach - canh tranh cac truong thong ((van toan) OR (van thanh)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) sach - canh tranh cac truong thong ((van toan) OR (van thanh)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) sach - canh tranh cac truong thong ((van toan) OR (van thanh)) tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) sach - canh tranh cac truong thong ((van toan) OR (van thanh)) tap*.