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