Perhaps you should try some spelling variations:
dang xay » dang van, van xay
cham xuc » cam xuc, chat xuc, cham soc
hanh dai » hanh tai, hanh dao, vanh dai
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 x) or (dang xay)) hoi. ((hieu va) OR (hieu qua)) cham xuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang x) OR (dang xay)) hoi. ((hieu va) OR (hieu qua)) cham xuc va hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang x) or (dang xay)) hoi. ((hieu va) OR (hieu qua)) cham xuc va hanh dai cua tre*".