Perhaps you should try some spelling variations:
khach thanh » khanh thanh, khach hang, nhanh thanh
sach tranh » canh tranh
tranh thin » tran thi, tran thien, canh thin
thanh tri » thanh tra, thanh tai, chinh tri
sach bao » sach dao, sach bai, sach bac
te sach » toc sach
tu sach » thu sach, su sach, tu cach

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 tranh thin ) or ( tu sach bao tri ))) or ( vay khach thanh tri ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( te sach tranh thin ) OR ( tu sach bao tri ))) OR ( vay khach thanh tri )).
• Adding a wildcard symbol may retrieve word variants: (((( te sach tranh thin ) or ( tu sach bao tri ))) or ( vay khach thanh tri ))*.