Perhaps you should try some spelling variations:
sach taieu » sach thieu, sach tien, cach tieu
sach tai » sach bai, sach tham, sach dao
cua viet » hoa viet, cua vat, cua dieu
nam thuc » nam thuoc, am thuc, nam thu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ca viet » va viet, co viet, hoa viet
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
ve nam » he nam, va nam, le nam

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

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