Perhaps you should try some spelling variations:
sang cho » danh cho, dung cho, sang tao
cho hoc » co hoc, khoa hoc
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
luu tre » luu tru, cuu tre, luy tre
sach v » sach va, sach 2, sach vay
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((sach v) or (sach y)) sang cho hoc. hieu va cam tuc va hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((sach v) OR (sach y)) sang cho hoc. hieu va cam tuc va hanh vi luu tre*.