Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » cam xuc, chat xuc, cham soc
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va cham » va chat, va tham
xuc ca » xuc cam, xuc cua
cuc te » cua te, cuc thue, cuc tieu

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) or (toc sach)) ky ((nang x) or (nang ma)) hoi. hieu va cham xuc ca nhan tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky ((nang x) OR (nang ma)) hoi. hieu va cham xuc ca nhan tai cuc te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky ((nang x) or (nang ma)) hoi. hieu va cham xuc ca nhan tai cuc te*.