Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nha thuoc » nha nuoc, nhan thuc, nha hoc
thanh vi » thanh va, thanh ve, nhanh vi
nang mai » nang ma, nang tai, lang mai
cao xuc » cam xuc, cao duc, cao suc
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
va cao » va cac, va co, va dao

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 (thuoc sach)) y nang mai hoi. hieu va cao xuc van ((thanh vi) or (hanh vi)) nha thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) y nang mai hoi. hieu va cao xuc van ((thanh vi) OR (hanh vi)) nha thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) y nang mai hoi. hieu va cao xuc van ((thanh vi) or (hanh vi)) nha thuoc*.