Perhaps you should try some spelling variations:
thien chinh » tien thinh, thien chien, thi chinh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan dang » quang dang, quan lang, quan dong
dang cong » dung cong
van thuat » va thuat, van tuan, van chat
van thuan » van tuan, van than, van quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien chinh sach - hanh trinh quan dang cong ((van thuat) or (van thuan)) cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien chinh sach - hanh trinh quan dang cong ((van thuat) OR (van thuan)) cam.
• Adding a wildcard symbol may retrieve word variants: thien chinh sach - hanh trinh quan dang cong ((van thuat) or (van thuan)) cam*.