Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
tham tuc » tham thuc, thai tuc, nham thuc
danh sai » dung sai, danh bat, danh dau
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thanh
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa

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 (hoc sach)) y nang xa hoi. lieu va tham tuc va danh sai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) y nang xa hoi. lieu va tham tuc va danh sai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (hoc sach)) y nang xa hoi. lieu va tham tuc va danh sai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) y nang xa hoi. lieu va tham tuc va danh sai ((cua tre) OR (cua triet))*.