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
ve cham » va cham, ve chat, vu cham
y nang » ky nang, ly nang, v nang
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 y nang x hoi. hieu ((ve cham) 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 y nang x hoi. hieu ((ve cham) OR (va cac)) duc va thanh vi ((cua te) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: so sach y nang x hoi. hieu ((ve cham) or (va cac)) duc va thanh vi ((cua te) or (dau tren))*.