Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
toc sach » hoc sach, doc sach, nuoc sach
danh vai » danh sai, danh va, doanh van
cham xuc » cam xuc, chat xuc, cham soc
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va danh » va dinh, va dan, va hanh
ca viet » va viet, co viet, hoa viet
xuc va » duc va, tuc va, luc va
vai ca » vai cac, vai cua, bai 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) or (((te sach) OR (toc sach)))) ky lang xa hoi. hieu vu cham xuc va danh vai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (((te sach) OR (toc sach)))) ky lang xa hoi. hieu vu cham xuc va danh vai ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (((te sach) OR (toc sach)))) ky lang xa hoi. hieu vu cham xuc va danh vai ca viet".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (((te sach) OR (toc sach)))) ky lang xa hoi. hieu vu cham xuc va danh vai ca viet*.