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