Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
sach ty » sach tu, sach thu, xach tay
xang xa » lang xa, mang xa, ang xa
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
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: thu ((sach ty) or (sach y)) xang xa hoi. hieu van cam duc va hanh vi ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach y)) xang xa hoi. hieu van cam duc va hanh vi ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) or (sach y)) xang xa hoi. hieu van cam duc va hanh vi ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sach y)) xang xa hoi. hieu van cam duc va hanh vi ((cua te) OR (cua tu))*.