Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
dua tren » dung tren
sach doi » sach hoi, sach moi, sach dao
va thanh » gia thanh, ban thanh, va tinh
hieu vi » hieu voi, hieu va, hieu ve
sach lo » sach dao, sach hoi, sach moi
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
pham » phan

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) OR (sach doi)) nang ma hoi. hieu vi pham duc va thanh lap ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach lo) OR (sach doi)) nang ma hoi. hieu vi pham duc va thanh lap ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach lo) OR (sach doi)) nang ma hoi. hieu vi pham duc va thanh lap ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te ((sach lo) OR (sach doi)) nang ma hoi. hieu vi pham duc va thanh lap ((dua tren) or (cuu tre))*.