Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
dang xay » dang van, van xay
vu cham » va cham, vu kham, tu cham
lap cua » lai cua, tap cua, lam cua
te sach » toc sach
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 x) or (dang xay)) hoi. hieu vu cham ((xuc va) or (tuc va)) thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang x) OR (dang xay)) hoi. hieu vu cham ((xuc va) OR (tuc va)) thanh lap cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (dang xay)) hoi. hieu vu cham ((xuc va) or (tuc va)) thanh lap cua tre*.