Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hanh trinh » canh tranh, hanh chinh
cac phuong » cac truong
hien sach » dien sach, kien sach, thien hach
trinh cac » trinh cau, trinh chat, trinh chao
cong dan » cong san, cong tan, huong dan
than ban » thanh ban, than man, nhuan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh trinh cac phuong cong dan ((than ban) or (((toan ban) or (van ban))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh trinh cac phuong cong dan ((than ban) OR (((toan ban) OR (van ban)))).
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh trinh cac phuong cong dan ((than ban) or (((toan ban) or (van ban))))*.