Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
dua tren » dung tren
thanh vi » hanh vi, thanh va, thanh ve
cham sac » cham soc, pham sach, cap sac
va cham » va chat, va tham
sac van » cac van, san van, sat van
nang xa » lang xa, nang ma, mang xa
cuu tre » cua tre, cau tren, cau treo
vu sach » vu bach, su sach, vu khach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((nang xa) or (nang x)) hoi. lieu va cham sac van thanh vi ((cuu tre) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang x)) hoi. lieu va cham sac van thanh vi ((cuu tre) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang x)) hoi. lieu va cham sac van thanh vi ((cuu tre) or (dua tren))*.