Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cham duc » pham duc, cham soc, phan duc
va triet » va thiet, va trien, ve triet
hanh doi » thanh doi, hanh noi, hang doi
pham duy » pham duc
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
te sach » toc sach

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 nang xa hoi. hieu ve ((cham duc) or (pham duy)) va hanh doi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve ((cham duc) OR (pham duy)) va hanh doi ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve ((cham duc) or (pham duy)) va hanh doi ((va triet) or (su triet))*.