Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
truc nang » truc nano, tru nang, truc trang
ban thanh » ban hanh, ban hang
sach truc » cach thuc, sach tren, sach thu
thuc ban » thuoc ban, thuc dan, thu ban
so sach » so sanh, bo sach, co sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
ve nam » he nam, le nam, te nam
ma hoi » mai hoi, xa hoi, ma hoa
va nam » van nam, ha nam, va nay

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 truc nang ma hoi. hieu ((ve nam) OR (va nam)) thuc ban thanh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach truc nang ma hoi. hieu ((ve nam) OR (va nam)) thuc ban thanh lai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach truc nang ma hoi. hieu ((ve nam) OR (va nam)) thuc ban thanh lai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: so sach truc nang ma hoi. hieu ((ve nam) OR (va nam)) thuc ban thanh lai ((cua tre) or (cuu tre))*.