Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong vat cho snippets" » "dong vat code snippets", "dong va cho snippets", "dong von cho snippets", "dong ha cho snippets", "dong vat co snippets", "dong van cho snippets", "dong dat cho 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 vat cho 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 vat cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong vat cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong vat cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.