Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mao dat cua snippets" » "tao dat cua snippets", "giao dat cua snippets", "mang dat cua snippets", "mao dai cua snippets", "mao day cua snippets", "mao mat 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: (((("mao dat 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: (((("mao dat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mao dat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mao dat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.