Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
cau treo » cau theo, cau tren, cau triet
dua tren » dung tren
va thanh » gia thanh, ban thanh, va tinh
hieu voi » hieu moi, lieu voi, hieu loi
hieu ve » hieu va, hieu van
sach lo » sach dao, sach doi, sach hoi
sang ma » tang ma, nang ma, sang tao
lo sang » lam sang, luc sang, cao sang
te sach » toc sach
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 lo sang ma hoi. ((hieu ve) or (hieu voi)) pham duc va thanh lap ((dua tren) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach lo sang ma hoi. ((hieu ve) OR (hieu voi)) pham duc va thanh lap ((dua tren) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: te sach lo sang ma hoi. ((hieu ve) or (hieu voi)) pham duc va thanh lap ((dua tren) or (cau treo))*.