Perhaps you should try some spelling variations:
ve triet » va trien, su triet
chat tuc » chat xuc, luat tuc, chat huu
toc sach » hoc sach, doc sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
va chat » van chat, va phat, cao chat
va danh » va dinh, va dan, va hanh
danh tu » anh tu, doanh thu
cua tre » cua te, cuu tre, cua triet
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: ((te sach) OR (toc sach)) y nang ma hoa. lieu va chat tuc va danh tu ((cua tre) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang ma hoa. lieu va chat tuc va danh tu ((cua tre) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang ma hoa. lieu va chat tuc va danh tu ((cua tre) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y nang ma hoa. lieu va chat tuc va danh tu ((cua tre) or (ve triet))*.