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