Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vua hoc cong snippets" » "vua hoc co snippets", "vua cac cong snippets", "vua hoc dung snippets", "va hoc cong snippets", "cua hoc cong snippets", "luan hoc cong 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: (((("vua hoc cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vua hoc cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vua hoc cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vua hoc cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.