Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
te sach » toc sach
dua ban » dia ban, cua ban, qua ban
ky sang » ky nang, ky dang, ky tang
lam cua » nam cua, lam chat
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
duc ban » duc tan, duc van, duc man
ve cao » va cao, ve bao, ve cac
ma hoi » mai hoi, ma hoa, me hoi
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: te sach ky sang ((ma hoi) OR (xa hoi)). hieu ve cao ((duc ban) or (dua ban)) thanh lam cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ((ma hoi) OR (xa hoi)). hieu ve cao ((duc ban) OR (dua ban)) thanh lam cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang ((ma hoi) OR (xa hoi)). hieu ve cao ((duc ban) or (dua ban)) thanh lam cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ((ma hoi) OR (xa hoi)). hieu ve cao ((duc ban) or (dua ban)) thanh lam cua te*.