Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vat dan cua snippets" » "vat dan code snippets", "va dan cua snippets", "van dan cua snippets", "vat ran cua snippets", "vat dan ca snippets", "vat ban cua snippets", "vat dai 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: (((("vat dan 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: (((("vat dan cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vat dan cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat dan cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.