Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang van he snippets" » "dang van he snippets", "hoang van he snippets", "trong van he snippets", "tang van hoe snippets", "tang van hue snippets", "tang van de 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: (((("python using java snippets") or ("tang van he snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tang van he snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tang van he snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tang van he snippets"))) or ("locating bug code snippets"))*.