Perhaps you should try some spelling variations:
ngang cho » nang cho, ngang tho, sang cho
sach ty » sach tu, sach thu, xach tay
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
van anh » van thanh, van minh
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
vi cua » vai cua, di cua
tuan » quan, tran, luan

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 y)) ngang cho hoc. hieu ve cac luc ((van anh) or (tuan anh)) vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach y)) ngang cho hoc. hieu ve cac luc ((van anh) OR (tuan anh)) vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ty) OR (sach y)) ngang cho hoc. hieu ve cac luc ((van anh) or (tuan anh)) vi cua cau*".