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