Perhaps you should try some spelling variations:
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua te » cua tu
cua cu » cua chu, cua cau, cua su
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) or (sach tu)) hang xa hoi. hieu va co tu va hanh vi ((cua te) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach tu)) hang xa hoi. hieu va co tu va hanh vi ((cua te) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) or (sach tu)) hang xa hoi. hieu va co tu va hanh vi ((cua te) or (cua cu))*.