Perhaps you should try some spelling variations:
sach hoi » sach doi, sach moi, cach thoi
hoi lang » hoa lang, hoi dan
cau treo » cau theo, cau tren, cau triet
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
van cac » van hac, van bac, dan cac
van cau » van dau, van hau, van chat
xa hanh » xa thanh, xa khanh, va hanh
hoc xa » hoc ma
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoi lang xa hoi. thi ((van cac) or (van cau)) hoc xa hanh vi ((cau treo) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoi lang xa hoi. thi ((van cac) OR (van cau)) hoc xa hanh vi ((cau treo) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach hoi lang xa hoi. thi ((van cac) or (van cau)) hoc xa hanh vi ((cau treo) or (cua te))*.