Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sac van » cac van, san van, sat van
soc van » hoc van, oc van, soc dan
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
anh ve » hanh ve, anh va, anh viet
ve cua » le cua, de cua, te cua
tu sac » tu sach, tu cac, tu san

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang ma)) hoi. hieu vu cham ((soc van) OR (sac van)) anh ve cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang xa) OR (nang ma)) hoi. hieu vu cham ((soc van) or (sac van)) anh ve cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) OR (nang ma)) hoi. hieu vu cham ((soc van) or (sac van)) anh ve cua triet*.