Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
lam duoc » nam duoc, luat duoc, lam thuoc
ban banh » ban hanh, ban anh, ban danh
banh vai » hanh vi, ban va, hanh va
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. ((hieu van) or (lieu va)) ((lam duoc) or (cam xuc)) ban banh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. ((hieu van) OR (lieu va)) ((lam duoc) OR (cam xuc)) ban banh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. ((hieu van) or (lieu va)) ((lam duoc) or (cam xuc)) ban banh vai cua viet*.