Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho viet du snippets" » "tho viet du snippets", "ho viet du snippets", "nho viet du snippets", "pho viet duc snippets", "pho viet duy snippets", "pho viet tu snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("pho viet du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho viet du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho viet du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho viet du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.