Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cong cong » cong dong, trong cong, dung cong
pham toan » pham tan, phap toan, pham tran
pham tuan » pham luan, pham xuan, pham thanh
ho chieu » theo chieu, doi chieu, mot chieu

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) OR (hoc thieu)) tinh - hanh trinh cua cong cong ((pham toan) or (pham tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - hanh trinh cua cong cong ((pham toan) OR (pham tuan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) tinh - hanh trinh cua cong cong ((pham toan) or (pham tuan)) tap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) tinh - hanh trinh cua cong cong ((pham toan) or (pham tuan)) tap*.