Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
dau tren » dau tien, dat tren, dau tieng
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ve cam » ve cham, ve cac, va cam
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang x hoi. hieu ((ve cam) or (va cac)) duc va thanh vi ((cua te) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. hieu ((ve cam) OR (va cac)) duc va thanh vi ((cua te) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. hieu ((ve cam) or (va cac)) duc va thanh vi ((cua te) or (dau tren))*.