Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
te sach » toc sach
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » va thanh, va danh, dao hanh
dai huu » dao huu, dai hau, dai thua
huu tre » huu tri, cuu tre, huu them
y xang » ty xang
xang x » nang x
x hoi » xa hoi, o hoi, x ho

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 y xang x hoi. hieu va cac xuc ((va hanh) or (((van hanh) OR (ban hanh)))) dai huu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y xang x hoi. hieu va cac xuc ((va hanh) OR (((van hanh) OR (ban hanh)))) dai huu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y xang x hoi. hieu va cac xuc ((va hanh) or (((van hanh) OR (ban hanh)))) dai huu tre*".