Perhaps you should try some spelling variations:
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
van cam » van nam, van lam, van cau
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat, trung va
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dang xay hoi. hieu van cam ((xuc va) or (truc va)) hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang xay hoi. hieu van cam ((xuc va) OR (truc va)) hanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: so sach ky dang xay hoi. hieu van cam ((xuc va) or (truc va)) hanh vi ((cua te) or (cua tu))*.