Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
dang xay » dang van, van xay
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van luu » von luu, van lu, van luc
truc va » thuc va, thuc vat, trung va
va chat » van chat, va phat, cao chat
ve chat » van chat
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
luu tre » luu tru, cuu tre, luy tre
tuc va » thuc va, tuc xa, duc 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 ky dang xay hoi. hieu ((ve chat) or (va chat)) ((tuc va) OR (truc va)) thanh van luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. hieu ((ve chat) OR (va chat)) ((tuc va) OR (truc va)) thanh van luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xay hoi. hieu ((ve chat) or (va chat)) ((tuc va) OR (truc va)) thanh van luu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. hieu ((ve chat) or (va chat)) ((tuc va) OR (truc va)) thanh van luu tre*.