Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
than cua » nhan cua, thai cua, ban cua
van bac » van ban, van hac, dan bac
xuc gia » duc gia, luc gia, tuc gia
van bao » van ban, van dao
sach ky » sac ky, sach y, sach kem
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) or (sach ty)) lang xa hoi. hieu ((van bac) OR (van bao)) xuc gia thanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach ty)) lang xa hoi. hieu ((van bac) OR (van bao)) xuc gia thanh than cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) or (sach ty)) lang xa hoi. hieu ((van bac) OR (van bao)) xuc gia thanh than cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) or (sach ty)) lang xa hoi. hieu ((van bac) OR (van bao)) xuc gia thanh than cua tre*.