Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tu quang » vu quang, chu quang, bui quang
khoa hoc » hoa hoc
te sach » toc sach
cac xuc » cam xuc, cac nuoc, chat xuc
tu xang » ty xang, tu lang, tct xang
xuc van » duc van, luc van, vuc van
cho hoc » co hoc
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu xang) OR (tu quang)) ((cho hoc) or (khoa hoc)). hieu ve cac xuc van hanh vi cua cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu xang) OR (tu quang)) ((cho hoc) OR (khoa hoc)). hieu ve cac xuc van hanh vi cua cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu xang) OR (tu quang)) ((cho hoc) or (khoa hoc)). hieu ve cac xuc van hanh vi cua cac*".