Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
nang dai » nang dau, nang tai, lang dai
xuc van » duc van, luc van, vuc van
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
dai moi » doi moi, dai hoi
su sach » so sach, vu sach
te sach » toc sach
vai va » mai va, dai va, hai va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((thu sach) or (te sach))) or (su sach)) ky nang dai moi. hieu va chat xuc van hanh vai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((thu sach) OR (te sach))) OR (su sach)) ky nang dai moi. hieu va chat xuc van hanh vai va thiet.
• Adding a wildcard symbol may retrieve word variants: ((((thu sach) or (te sach))) or (su sach)) ky nang dai moi. hieu va chat xuc van hanh vai va thiet*.