Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
xay hang » xay dung, ban hang, ly hang
thuc xay » thuc day, tuc xay, thuat xay
su sach » so sach, vu sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hang di » hang doi, hang vi, hang dien
di cua » dai cua, doi cua, de cua
ve nam » he nam, le nam, te nam
va nam » van nam, ha nam, va nay
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: ((su sach) or (hoc sach)) ky lang xa hoi. hieu ((ve nam) or (va nam)) thuc xay hang di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (hoc sach)) ky lang xa hoi. hieu ((ve nam) OR (va nam)) thuc xay hang di cua tu.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (hoc sach)) ky lang xa hoi. hieu ((ve nam) or (va nam)) thuc xay hang di cua tu*.