Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
dua tren » dung tren
quoc ban » quoc bao, quoc lan, quoc quan
sach tu » sach thu, cach tu, sach ty
cu tren » tu tren
te sach » toc sach
hanh xa » hanh va, hanh ma, hanh xu
tu hanh » du hanh, lu hanh, thuc hanh
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu hanh xa hoi. hieu ((ve cam) or (ve cac)) quoc ban thanh tai ((cu tren) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu hanh xa hoi. hieu ((ve cam) OR (ve cac)) quoc ban thanh tai ((cu tren) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: te sach tu hanh xa hoi. hieu ((ve cam) or (ve cac)) quoc ban thanh tai ((cu tren) or (dua tren))*.