Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tho da hoc snippets" » "tho dan hoc snippets", "tho ca hoc snippets", "pho da hoc snippets", "tho dai hoc snippets", "tho day hoc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("tho da hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tho da hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tho da hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho da hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.