Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
va triet » va thiet, va trien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
te sach » toc sach
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, dam thuc
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
cua te » cua tu

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 dang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va danh sai ((va triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va danh sai ((va triet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va danh sai ((va triet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va danh sai ((va triet) or (cua te))*.