Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh vi » hanh vi, thanh va, thanh ve
vien cac » vien bach, vien dai, vien da
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
xuc van » duc van, xuc ban, thuc van
luc van » luoc van, luu van, duc van
nang xa » nang x, lang xa, nang ma
ca viet » va viet, co viet, hoa viet
vi ca » vit ca, li ca, va ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang xa hoi. hieu ((ve cham) or (vien cac)) ((xuc van) or (luc van)) thanh vi ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. hieu ((ve cham) OR (vien cac)) ((xuc van) OR (luc van)) thanh vi ca viet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu ((ve cham) or (vien cac)) ((xuc van) or (luc van)) thanh vi ca viet*.