Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thanh doc ho snippets" » "than doc ho snippets", "thanh do ho snippets", "nhanh doc ho snippets", "thanh duoc hoc snippets", "thanh duoc hoi 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: (((("thanh doc ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thanh doc ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thanh doc ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thanh doc ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.