Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pha vao cao snippets" » "pha vao code snippets", "pha van cao snippets", "pham van cao snippets", "phan van cao snippets", "pha bao cao snippets", "pha tao cao snippets", "pha va cao 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 vao cao 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 vao cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( pha vao cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha vao cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.