Perhaps you should try some spelling variations:
thien van » thi van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van hau » van ha, van hai, van dau
hau duc » huu duc, ha duc, pham duc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
vi va » vai va, vu va, bi va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. thien van hau duc va hanh ((vi va) OR (vi van)) tuyen~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. thien van hau duc va hanh ((vi va) or (vi van)) tuyen*.