Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong tan cua snippets" » "duong tan cua snippets", "dong tai cua snippets", "dong san cua snippets", "dong than cua snippets", "dong tang cua snippets", "dong toan cua 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: (((("dong tan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong tan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.