Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
tham xuc » tham nuoc, tham thuc, pham duc
toc sach » hoc sach, doc sach, nuoc sach
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, dua tren
va tham » van tham, va cham, va thanh
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (thuoc sach)) y nang x hoi. hieu va tham xuc va danh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuoc sach)) y nang x hoi. hieu va tham xuc va danh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (thuoc sach)) y nang x hoi. hieu va tham xuc va danh vi ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (thuoc sach)) y nang x hoi. hieu va tham xuc va danh vi ((cua tre) or (cua triet))*.