Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho dan cach snippets" » "pho dan cac snippets", "pho dan canh snippets", "pho nhan cach snippets", "pho danh cach snippets", "tho dan cach snippets", "pho da cach 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 dan cach 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 dan cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.