Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
cam dan » cac dan, ca dan, nam dan
cac xuc » cac nuoc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ma hoi. hieu ve ((cac xuc) or (cam xuc)) cam dan ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ma hoi. hieu ve ((cac xuc) OR (cam xuc)) cam dan ((vi cua) OR (vai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ma hoi. hieu ve ((cac xuc) or (cam xuc)) cam dan ((vi cua) or (vai cua)) tre*.