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