Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
ban hanh » ban hang
te sach » toc sach
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
cua te » cua tu
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 nang x hoi. ((hieu van) or (hieu va)) cam xuc ban hanh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. ((hieu van) OR (hieu va)) cam xuc ban hanh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. ((hieu van) or (hieu va)) cam xuc ban hanh vi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. ((hieu van) or (hieu va)) cam xuc ban hanh vi ((cua tre) OR (cua te))*.