Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh trinh » canh tranh, hanh chinh
quan hoang » luan hoan
quan hang » quan lang, quan hanh, qua hang
ho thien » nho thien, ho thiet, ho tien
cong tac » cong ty
tac van » tac vang, cac van, tac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thien hach - hanh trinh ((quan hang) or (quan hoang)) cong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thien hach - hanh trinh ((quan hang) OR (quan hoang)) cong tac van ban.
• Adding a wildcard symbol may retrieve word variants: ho thien hach - hanh trinh ((quan hang) or (quan hoang)) cong tac van ban*.