Perhaps you should try some spelling variations:
thanh lai » thanh lap, thanh loi, thanh tai
thanh hai » thanh phan, thanh hoa, thanh san
dua tren » dung tren
sach ly » sach y, sach lo, sach ty
te sach » toc sach
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
cuu tre » cua tre, cau tren, cau treo
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 ly nang ma hoi. hieu ve pham duc va ((thanh lai) OR (thanh hai)) ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ma hoi. hieu ve pham duc va ((thanh lai) OR (thanh hai)) ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang ma hoi. hieu ve pham duc va ((thanh lai) OR (thanh hai)) ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ma hoi. hieu ve pham duc va ((thanh lai) OR (thanh hai)) ((dua tren) or (cuu tre))*.