Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
sach ty » sach y, sach tu, sach thu
cach tu » cach thuc
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
cuu tre » cua tre, cau tren, cau treo
xuc va » tuc va, luc va, xac va
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (cach tu)) nang x hoi. hieu ve chat ((xuc va) or (duc va)) danh sai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (cach tu)) nang x hoi. hieu ve chat ((xuc va) OR (duc va)) danh sai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (cach tu)) nang x hoi. hieu ve chat ((xuc va) or (duc va)) danh sai cuu tre*.