Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
thanh lai » thanh hai, thanh lap, thanh loi
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
cuu tre » cua tre, cau tren, cau treo
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
tu nang » tru nang, tu nong, tu nano
dau va » dau ve
ma hoi » mai hoi, xa hoi, ma hoa

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 tu nang ma hoi. hieu ve phan ((dau va) OR (lau va)) thanh lai ((dung tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang ma hoi. hieu ve phan ((dau va) OR (lau va)) thanh lai ((dung tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang ma hoi. hieu ve phan ((dau va) OR (lau va)) thanh lai ((dung tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang ma hoi. hieu ve phan ((dau va) OR (lau va)) thanh lai ((dung tren) or (cuu tre))*.