Perhaps you should try some spelling variations:
trong thuong » thong thuong, trong tuong, cong thuong
tong thuong » thong thuong, cong thuong, ton thuong
theo chieu » theo tieu, ho chieu, thi chieu
quang cua » quan cua, quang tuan, quang huy
manh toan » thanh toan, anh tuan, tinh toan
theo chu » cho chu, chao chu, theo yeu
toan ban » van ban

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)) xanh - nhanh quang cua ((tong thuong) OR (trong thuong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - nhanh quang cua ((tong thuong) OR (trong thuong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) xanh - nhanh quang cua ((tong thuong) OR (trong thuong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) xanh - nhanh quang cua ((tong thuong) OR (trong thuong)) manh toan ban*.