Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ve triet » va trien, su triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cam tuc » cam tu, nam thuc, dam thuc
va hanh » van hanh, va thanh, va danh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. hieu qua ((cam tuc) OR (cam xuc)) va hanh vi ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu qua ((cam tuc) OR (cam xuc)) va hanh vi ((cua triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu qua ((cam tuc) OR (cam xuc)) va hanh vi ((cua triet) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu qua ((cam tuc) OR (cam xuc)) va hanh vi ((cua triet) or (ve triet))*.