Perhaps you should try some spelling variations:
te sach » toc sach
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
vu cham » va cham, vu kham, tu cham
cuu tre » cua tre, cau tren, cau treo
nang xa » lang xa, nang ma, mang xa
va cam » va cham, va cac, va cao
loc va » hoc va, luc va
vi cuu » vi luu, vinh cuu

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