Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hap cao cong snippets" » "hap cao code snippets", "hap cac cong snippets", "hap cao dang snippets", "hap cua cong snippets", "chap lao cong snippets", "chat cao cong snippets", "chay cao 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: (((("hap cao 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: (((("hap cao cong snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hap cao cong snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap cao cong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.