Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dinh van con snippets" » "trinh van con snippets", "sinh vat con snippets", "dinh van cong snippets", "dinh van bon snippets", "dinh van co 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: (((("dinh van con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dinh van con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dinh van con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dinh van con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.