Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
chat xuc » chat huu, cam xuc, chao xu
dinh cuu » dinh chi
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
va chat » van chat, va phat, cao chat
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
cuu tre » cua tre, cau tren, cau treo

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 ky nang ((xa hoi) or (mai hoi)). hieu va chat xuc ((van hanh) or (ban thanh)) dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((xa hoi) OR (mai hoi)). hieu va chat xuc ((van hanh) OR (ban thanh)) dinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((xa hoi) or (mai hoi)). hieu va chat xuc ((van hanh) or (ban thanh)) dinh cuu tre*.