Perhaps you should try some spelling variations:
dua tren » dung tren
te sach » toc sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
soc va » hoc va, loc va, doc va
cua tu » cua tuc, cua su, cua cu
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 va cham soc va danh vi ((((cua tre) or (dua tren))) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu va cham soc va danh vi ((((cua tre) OR (dua tren))) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu va cham soc va danh vi ((((cua tre) or (dua tren))) or (cua tu))*.