Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho van du snippets" » "khao van du snippets", "ho van du snippets", "tho van du snippets", "kho van duy snippets", "kho van dau snippets", "kho 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: (((("kho van du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho van du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho van du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho van du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.