Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cam tuc » cam xuc, cam tu, nam thuc
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
vi ve » va ve, gi ve, ve ve

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