Perhaps you should try some spelling variations:
sach luan » sach luyen, sach han
thanh tri » thanh tra, thanh tai, chinh tri
thu sach » thuat sach, thuoc sach, thu hoach
luan tri » quan tri, luan thi, luat tri
san luan » dan luan, tang luan, hang luan
han tri » han tai, van tri, chan troi
tu sach » su sach, te sach, tu cach
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu sach ((han tri) OR (thanh tri)) ) or ((( tu sach luan tri ) or ( tu san luan tri ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu sach ((han tri) OR (thanh tri)) ) OR ((( tu sach luan tri ) OR ( tu san luan tri )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thu sach ((han tri) OR (thanh tri)) ) or ((( tu sach luan tri ) or ( tu san luan tri ))))".
• Adding a wildcard symbol may retrieve word variants: (( thu sach ((han tri) OR (thanh tri)) ) or ((( tu sach luan tri ) or ( tu san luan tri ))))*.