Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
toc sach » hoc sach, doc sach, thuoc sach
cho hoc » co hoc, khoa hoc
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
tu nong » tu dong, tu cong, tu tong
tu nang » tru nang, tu nano, tu lang
cua chu » sua chua
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: ((te sach) OR (toc sach)) ((tu nang) or (tu nong)) cho hoc. hieu va cac xuc van hanh vi cua chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ((tu nang) OR (tu nong)) cho hoc. hieu va cac xuc van hanh vi cua chu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ((tu nang) or (tu nong)) cho hoc. hieu va cac xuc van hanh vi cua chu*".