Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua duc nghe snippets" » "cua duc nghia snippets", "cua duc ngoc snippets", "cua day nghe snippets", "cua tuc nghe snippets", "cua nuoc nghe snippets", "cua quoc nghe 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: (((("cua duc nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua duc nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua duc nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua duc nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.