Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh ve » trinh he, trinh va, trinh vi
ve nhung » va nhung, tu nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap
ha tinh » va tinh, may tinh
o ha » y ha, _ ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: o ha tinh - hanh trinh ve nhung ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o ha tinh - hanh trinh ve nhung ((cong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: o ha tinh - hanh trinh ve nhung ((cong dan) or (cong san)) toan cao*.