Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
va thanh » gia thanh, ban thanh, va tinh
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky dang ha hoi. hieu va thanh ((soc va) or (luc va)) hanh vi ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang ha hoi. hieu va thanh ((soc va) OR (luc va)) hanh vi ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: te sac ky dang ha hoi. hieu va thanh ((soc va) or (luc va)) hanh vi ((cua tre) or (cua viet))*.