Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh ca » hanh cac, hanh cat, hanh cua
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
ca cua » co cua
su sac » su sach, su cac, su xac

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

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