Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cau tren » cu tren, dau tren, ca tren
dua tren » dung tren
thanh vi » hanh vi, thanh va, thanh ve
sach ky » sac ky, sach y, sach ty
duc van » duc va, duc tan, duc manh
te sach » toc sach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
ve cham » va cham, ve chat, vu cham
ve cam » ve cac, va cam, ve cai

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 ky tang xa hoi. hieu ((ve cam) or (ve cham)) duc van thanh vi ((dua tren) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang xa hoi. hieu ((ve cam) OR (ve cham)) duc van thanh vi ((dua tren) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ky tang xa hoi. hieu ((ve cam) or (ve cham)) duc van thanh vi ((dua tren) or (cau tren))*.