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