Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong tu vo snippets" » "dong tu code snippets", "dong luc vo snippets", "thong tu vo snippets", "dong tai vo snippets", "dong tu va snippets", "dong tu so snippets", "dong tu do 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: (((("dong tu vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong tu vo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong tu vo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tu vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.