Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nghe chu cua snippets" » "nghe chu code snippets", "nghe thu cua snippets", "nghe che cua snippets", "nghe cho cua snippets", "nghe chuc cua snippets", "nghe hu cua snippets", "nghe chi cua snippets"
"python using java snippets" » "python using data 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: (((("nghe chu cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghe chu cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nghe chu cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe chu cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.