Perhaps you should try some spelling variations:
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 » van thanh, ban hanh, van anh
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 van » duc van, luc van, vuc van
ma hoi » mai hoi, xa hoi, ma hoa
vi su » va su, ve su, oi su
ki su » ky su

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 vuc nang ma hoi. hieu va cham xuc van hanh ((vi su) or (ki su)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vuc nang ma hoi. hieu va cham xuc van hanh ((vi su) OR (ki su)) viet.
• Adding a wildcard symbol may retrieve word variants: tu sach vuc nang ma hoi. hieu va cham xuc van hanh ((vi su) or (ki su)) viet*.