Perhaps you should try some spelling variations:
quan thanh » ban thanh, van thanh
quan hanh » quang thanh, quang khanh, quan hoang
anh nang » ganh nang, anh bang, anh dang
cong san » cong tac
than tap » toan tap, phan tap, than cap
ho chuc » hoi chuc, hoc chuc, ho chua
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chuc nang - anh nang ((quan hanh) OR (quan thanh)) cong san ((than tap) or (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chuc nang - anh nang ((quan hanh) OR (quan thanh)) cong san ((than tap) OR (han tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chuc nang - anh nang ((quan hanh) OR (quan thanh)) cong san ((than tap) or (han tap))".
• Adding a wildcard symbol may retrieve word variants: ho chuc nang - anh nang ((quan hanh) OR (quan thanh)) cong san ((than tap) or (han tap))*.