Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"when hoc cho snippets" » "when hoc code snippets", "khien hoc cho snippets", "dien hoc cho snippets", "hen ho cho snippets", "when hoc cao snippets", "when hoc pho snippets", "when hoc co snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("when hoc cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("when hoc cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( when hoc cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when hoc cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.