Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi gian cua snippets" » "phi gia cua snippets", "thoi gian cua snippets", "thi giang cua snippets", "phi gian xu snippets", "phi ban cua 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: (((("phi gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi gian cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi gian cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.