Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thanh hai do snippets" » "thanh phan do snippets", "thanh hoa do snippets", "thanh san do snippets", "thanh thai do snippets", "thanh hai so snippets", "thanh hai di 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: (((("thanh hai do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thanh hai do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thanh hai do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thanh hai do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.