Perhaps you should try some spelling variations:
sach tranh » canh tranh
sach thamh » sach tham
tranh trai » trang trai, tranh thai, thanh tra
sach tran » sach tren, vach tran, sach tham
thamh tri » thanh tri, tham tri, thanh tra
tran tri » trang tri, tran thi, trang trai
toc sach » hoc sach, doc sach, thuoc 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: (((( tu sach tran tri ) or ( te sach thamh tri ))) or ( toc sach tranh trai ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( tu sach tran tri ) OR ( te sach thamh tri ))) OR ( toc sach tranh trai )).
• Adding a wildcard symbol may retrieve word variants: (((( tu sach tran tri ) or ( te sach thamh tri ))) or ( toc sach tranh trai ))*.