Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat ha con snippets" » "nhat hoa con snippets", "nha ha con snippets", "khat ha con snippets", "nhat ha cong snippets", "nhat hai con snippets", "nhat va con 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: (((("nhat ha 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: (((("nhat ha con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat ha con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat ha con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.