Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
nhanh lang » nhanh quang, nhanh thang, nhan dang
thanh toan » thanh hoa, thanh san, tinh toan
theo doi » theo duoi, theo don, theo dong
van dung » van dong, tin dung
toan cao » toan ban, toan tap
theo bi » theo bo

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo bi) OR (theo doi)) tinh - nhanh lang ((van dung) OR (xay dung)) truong thanh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo bi) OR (theo doi)) tinh - nhanh lang ((van dung) or (xay dung)) truong thanh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo bi) OR (theo doi)) tinh - nhanh lang ((van dung) or (xay dung)) truong thanh toan cao*.