Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh de » hanh de, thanh ve, thanh do
lang van » dang van, tang van, hoang van
hieu va » lieu va, hieu qua
luc ban » duc ban, cuc ban, luc bat
cam luc » cam xuc, cau luc
sach ky » sach y, sach ty, sach kem
van hoc » van hoa
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
de cua » le cua, te cua, dieu cua
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: tu ((sach ky) or (sac ky)) lang van hoc. hieu va cam luc ban thanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) lang van hoc. hieu va cam luc ban thanh de cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) lang van hoc. hieu va cam luc ban thanh de cua te*.