Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van dip rong snippets" » "van di rong snippets", "van dia trong snippets", "van dap rong snippets", "van dich rong snippets", "van dinh rong 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: (((("van dip rong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van dip rong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dip rong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dip rong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.