Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
dua tren » dung tren
te sach » toc sach
cua tre » cuu tre, cua triet, cua thep
danh vi » hanh vi, dinh vi, danh di
sach ly » sach y, sach lo, sach ty
va danh » va dinh, va dan, va hanh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang x hoi. hieu va cham duc va danh vi ((((cua tre) OR (dua tren))) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang x hoi. hieu va cham duc va danh vi ((((cua tre) OR (dua tren))) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang x hoi. hieu va cham duc va danh vi ((((cua tre) OR (dua tren))) or (cua te))*.