Perhaps you should try some spelling variations:
theo chinh » thien chinh, te chinh, che chinh
hanh trinh » canh tranh, hanh chinh
trinh han » trinh quan
dang cong » dung cong
van thuan » van tuan, van than, van quan
han dang » phan dang, nhan dang, chan dang
va thuat » ky thuat, ki thuat, va thuc

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

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