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

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 hoi. hieu ve cam ((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 hoi. hieu ve cam ((duc va) OR (tuc va)) hanh ca cua viet.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ve cam ((duc va) or (tuc va)) hanh ca cua viet*.