Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
soc van » hoc van, oc van, sac van
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 ly hang ((xa hoi) or (ma hoa)). hieu vu cham soc van thanh vai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly hang ((xa hoi) OR (ma hoa)). hieu vu cham soc van thanh vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly hang ((xa hoi) or (ma hoa)). hieu vu cham soc van thanh vai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ly hang ((xa hoi) or (ma hoa)). hieu vu cham soc van thanh vai ((cua tre) OR (cua te))*.