Perhaps you should try some spelling variations:
tranh cua » doanh cua, manh cua
thanh cua » than cua, hanh cua, thanh cha
ve triet » va trien, su triet
cam hoc » cao hoc, am hoc, cam hoa
sach ky » sac ky, sach y, sach kem
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao

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