Perhaps you should try some spelling variations:
cac khoi » cac khoan, cach thoi, hoc khoi
cac thoi » cac toi, cac hop, cac tro
tang dan » tang van, tung dan, tang luan
dan hoc » van hoc, dan toc, dai hoc
hieu vu » hieu va, hieu ve, hieu su
cao xuc » cam xuc, cao duc, cao suc
va hanh » van hanh, va thanh, va danh
cua cay » cua cac
vu cao » cu cao, va cao
xuc va » duc va, tuc va, luc va
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: tu ((cac khoi) or (cac thoi)) tang dan hoc. hieu vu cao xuc va hanh vi cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cac khoi) OR (cac thoi)) tang dan hoc. hieu vu cao xuc va hanh vi cua cay.
• Adding a wildcard symbol may retrieve word variants: tu ((cac khoi) or (cac thoi)) tang dan hoc. hieu vu cao xuc va hanh vi cua cay*.