Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va trien » va truyen, va thiet, va tuyen
cham xuc » chat xuc, cham soc, pham duc
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
hieu va » lieu va, hieu qua
te sach » toc sach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuoc sach)) ky tang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va danh vi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky tang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va danh vi va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky tang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va danh vi va trien".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky tang xa hoi. hieu va ((cham xuc) OR (cam xuc)) va danh vi va trien*.