Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cham tuc » nham thuc, pham thuc, tham thuc
cua tre » cua te, cuu tre, cua triet
va lang » va nang, hoa lang
te sach » toc sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
va lanh » va danh, va hanh, va anh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. hieu ve cham tuc ((va lanh) OR (va lang)) dao ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu ve cham tuc ((va lanh) OR (va lang)) dao ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu ve cham tuc ((va lanh) OR (va lang)) dao ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu ve cham tuc ((va lanh) OR (va lang)) dao ((cua tre) or (su triet))*.