Perhaps you should try some spelling variations:
te sach » toc sach
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
cua tre » cuu tre, cua triet, dua tren
sach vu » sach va, sach tu, sach uu
dan vi » doan vi, don vi, dan va
cua te » cua tu
va dan » ca dan, va dao, va dau
xuc va » duc va, tuc va, luc va

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