Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
chieu sach » chinh sach, chiet tach, chieu sang
phung cong » nhung cong, phong cong, nhung chong
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh phan, hanh san
va phung » va phuong, van phung, va nhung
cong dan » cong san, cong tan, huong dan
than tap » toan tap, phan tap, than cap
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - ((hanh han) or (thanh phan)) va phung cong dan ((than tap) or (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh han) OR (thanh phan)) va phung cong dan ((than tap) OR (han tap))*.