Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nang cho » nang chon, ngang cho, nang cao
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
hieu va » lieu va
sach ty » sach tu, sach thu, xach tay
cho hoc » co hoc, khoa hoc
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua

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