Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hoa » cao hoat, cao khoa, cau hoa
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, chat xuc
cao suc » cao su, cao duc
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang cao hoa. hieu va ((cao xuc) or (cao suc)) va hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang cao hoa. hieu va ((cao xuc) OR (cao suc)) va hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang cao hoa. hieu va ((cao xuc) or (cao suc)) va hanh tai cua tre*.