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

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 cap sac van thanh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang x)) hoi. lieu va cap sac van thanh vi ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang x)) hoi. lieu va cap sac van thanh vi ((cuu tre) or (cua tre))*.