Perhaps you should try some spelling variations:
ngan trong » nhan trong, nhuan trong, gian trong
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
long tinh » cong tinh, trong tinh, luong tin
hoc hieu » hoc thieu, hoc hien, doc hieu
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh chinh ngan trong ((((cong thanh) or (dong thanh))) or (long tinh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh chinh ngan trong ((((cong thanh) OR (dong thanh))) OR (long tinh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh chinh ngan trong ((((cong thanh) or (dong thanh))) or (long tinh)) toan ban*.