Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
duc gia » quoc gia
cam duc » cam xuc, cao duc, pham duc
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
duy van » duy vat, dung van
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam

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 ((_ sang) or (duy van)) ma hoi. hieu ve cam duc gia thanh lap ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((_ sang) OR (duy van)) ma hoi. hieu ve cam duc gia thanh lap ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((_ sang) or (duy van)) ma hoi. hieu ve cam duc gia thanh lap ((cua tre) OR (cuu tre))*".