Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu sau » hieu su, hieu suat, tieu su
soc van » hoc van, oc van, sac van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
van anh » van thanh, tuan anh, van minh
ve cua » le cua, de cua, te cua
anh ve » hanh ve, anh va, anh viet
tu sac » tu cac, tu san, tu bac

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) OR (tu sach)) ky nang xa hoi. ((hieu va) OR (hieu sau)) cham soc van anh ve cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu sach)) ky nang xa hoi. ((hieu va) or (hieu sau)) cham soc van anh ve cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu sach)) ky nang xa hoi. ((hieu va) or (hieu sau)) cham soc van anh ve cua viet*.