Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
cau tren » cu tren, dau tren, ca tren
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
tu ban » thu ban
ve cam » ve cham, ve cac, va cam
te ban » te bao
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu nang ma hoi. hieu ve cam ((tu ban) OR (te ban)) thanh lai ((cua te) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu nang ma hoi. hieu ve cam ((tu ban) OR (te ban)) thanh lai ((cua te) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu nang ma hoi. hieu ve cam ((tu ban) OR (te ban)) thanh lai ((cua te) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: so sach thu nang ma hoi. hieu ve cam ((tu ban) OR (te ban)) thanh lai ((cua te) or (cau tren))*.