Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pha vu cong snippets" » "pha vu code snippets", "pha va cong snippets", "pha tu cong snippets", "pha cua cong snippets", "pham vu cong snippets", "pha du cong snippets", "ha vu cong 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: (((("pha vu cong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pha vu cong snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( pha vu cong snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha vu cong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.