Perhaps you should try some spelling variations:
khach tranh » khanh trach, khach trai, khanh thanh
dang thanh » dong thanh, dang hanh, hoang thanh
sach tranh » canh tranh
tranh tri » trang tri, tran tri, trang trai
thanh tri » thanh tra, thanh tai, chinh tri
vu khach » vu khanh, vu khac, vay khach
te dang » tre dang, le dang, de dang
so sach » so sanh, bo sach, co sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( vu khach tranh tri ) or ( te dang thanh tri ))) or ( so sach tranh tri ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( vu khach tranh tri ) OR ( te dang thanh tri ))) OR ( so sach tranh tri )).
• Adding a wildcard symbol may retrieve word variants: (((( vu khach tranh tri ) or ( te dang thanh tri ))) or ( so sach tranh tri ))*.