Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
vang phan » nang phan, quang phan, va phan
ho chiet » ho chieu, ho thiet, hoa thiet
cua dung » cua dang, cua dong, qua dung
van phan » van phong, van thanh, luan phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chiet) OR (hoc thiet)) tach - hanh trinh cua dung cong ((vang phan) or (van phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thiet)) tach - hanh trinh cua dung cong ((vang phan) OR (van phan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) OR (hoc thiet)) tach - hanh trinh cua dung cong ((vang phan) or (van phan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) OR (hoc thiet)) tach - hanh trinh cua dung cong ((vang phan) or (van phan)) cau*.