Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san hoc mon snippets" » "van hoc mon snippets", "dan hoc mon snippets", "san ho mon snippets", "san hoc moi snippets", "san hoc mot snippets", "san 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: (((("san hoc mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("san hoc mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san hoc mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san hoc mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.