Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
cam tuc » cam xuc, cam tu, dam thuc
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach

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 (su sach)) ty nang xa hoi. hieu ve ((cam tuc) or (nam thuc)) va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ty nang xa hoi. hieu ve ((cam tuc) OR (nam thuc)) va hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ty nang xa hoi. hieu ve ((cam tuc) or (nam thuc)) va hanh vai cuu tre*.