Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
sach ty » sach y, sach tu, sach thu
tai cau » tai cac, tai cao
va hanh » van hanh, va thanh, va danh
va vanh » va van, va danh, va anh
tu sach » thu sach, su sach, te sach
cam tuc » cam tu, nam thuc, dam thuc
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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

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