Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
sach vuc » sach duoc, sach nuoc, sach truc
vuc nang » cuc nang, vu nang, chuc nang
cham xuc » cam xuc, chat xuc, cham soc
van hanh » ban hanh, van anh, van ban
tu tieng » luc tieng, tu tuong, tu trong
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va cham » va chat, va tham
ma hoi » mai hoi, xa hoi, ma hoa
ki tu » ki tuc, kim tu, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach vuc nang ma hoi. hieu va cham xuc ((van hanh) or (van thanh)) ki tu tieng~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach vuc nang ma hoi. hieu va cham xuc ((van hanh) OR (van thanh)) ki tu tieng.
• Adding a wildcard symbol may retrieve word variants: thu sach vuc nang ma hoi. hieu va cham xuc ((van hanh) or (van thanh)) ki tu tieng*.