Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu pham oc snippets" » "thuc pham oc snippets", "thu phan oc snippets", "thuc phan oc snippets", "thu pham o snippets", "thu pham ngoc snippets", "thu pham duc 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: (((("thu pham oc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu pham oc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu pham oc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu pham oc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.