Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cong thanh » dong thanh, cong trinh, cong tan
tranh vat » trinh vat, tranh va, tranh van
dang cong » dung cong
dat sach » dat khach, nam sach, ban sach
mat sach » mang sach, nam sach, ban sach
vat dang » van dang, vat dung, va dang
toan cau » toan cao, toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dat sach) OR (mat sach)) - canh tranh vat dang cong thanh toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((dat sach) OR (mat sach)) - canh tranh vat dang cong thanh toan cau*.