Perhaps you should try some spelling variations:
ve triet » va trien, su triet
danh sai » dung sai, danh bat, danh dau
te sach » toc sach
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
van hoe » van hoa, van hoc, van hieu
van hoi » van hoa, van hoc, van loi
ky lang » ky nang, ky dang, ky tang
va cau » van cau, va cac, va dau
cua tu » cua tuc, cua su, cua cu

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 ky lang ((van hoi) OR (van hoe)). hieu va cau truc va danh sai ((ve triet) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang ((van hoi) OR (van hoe)). hieu va cau truc va danh sai ((ve triet) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang ((van hoi) OR (van hoe)). hieu va cau truc va danh sai ((ve triet) or (cua tu))*".