Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, hien hanh
chinh cua » chinh ca, chinh sua, hinh cua
hang cong » dang cong, hang nong, bang cong
cong vang » cong lang, cong quang, cong ngang
vang phan » van phan, nang phan, quang phan
cua hang » cua dang, cua nhung, cua cong
phan lap » phan dau

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) or (dieu hanh)) - hanh chinh cua hang cong vang phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - hanh chinh cua hang cong vang phan lap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - hanh chinh cua hang cong vang phan lap*.