Perhaps you should try some spelling variations:
hien hanh » dieu hanh
nang nang » nang sang, nang hang, chang nang
nang quan » ban quan, nang suat
quan dung » quang dung, quan duong, qua dung
trong san » trong cac, cong san, dong san
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - nang nang quan dung trong san than cap~.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - nang nang quan dung trong san than cap*.