Perhaps you should try some spelling variations:
based skills » basic skills, based small, based soil
skills human » skilled human, skills demand, skills can
human based » human caused, human cases, human case
young men » young women
wing yan » wang yan, wing ian, wing tan
ngo a » ngos a, neo a, ngo 1
yang » lang, wang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wing yan) or (yang dean))) or (yang di))ngo a human based skills human young men ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wing yan) OR (yang dean))) OR (yang di))ngo a human based skills human young men ;.
• Adding a wildcard symbol may retrieve word variants: ((((wing yan) or (yang dean))) or (yang di))ngo a human based skills human young men ;*.