Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cac phuong » cac truong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cac » trinh cau, trinh chat, trinh chao
cong tan » cong tac, cong san, cong thanh
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 chieu sach - hanh trinh cac phuong cong tan ((than ban) or (((toan ban) or (van ban))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh cac phuong cong tan ((than ban) OR (((toan ban) OR (van ban)))).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh cac phuong cong tan ((than ban) or (((toan ban) or (van ban))))*.