Perhaps you should try some spelling variations:
dang xay » dang van, van xay
chat xuc » chat huu, chao xu, chat cua
te sach » toc sach
sach vu » sach va, sach tu, sach uu
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
vu dang » su dang, vu quang, cua dang
dan vi » doan vi, don vi, gan vi
dan va » doan va, dan ca, ban 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 dang xay hoi. hieu va ((chat xuc) or (cam xuc)) va ((dan vi) OR (dan va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach vu dang xay hoi. hieu va ((chat xuc) OR (cam xuc)) va ((dan vi) OR (dan va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach vu dang xay hoi. hieu va ((chat xuc) or (cam xuc)) va ((dan vi) OR (dan va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach vu dang xay hoi. hieu va ((chat xuc) or (cam xuc)) va ((dan vi) OR (dan va)) cua tre*.