Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
van hanh » van thanh, ban hanh, van anh
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
hieu ve » hieu van
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
vi cua » vai cua, di cua
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: ((tu sach) or (thu sach)) ky nang x hoi. ((hieu ve) or (hieu va)) cam tuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. ((hieu ve) OR (hieu va)) cam tuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang x hoi. ((hieu ve) or (hieu va)) cam tuc van hanh vi cua te*.