Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi canh cua snippets" » "thi canh cua snippets", "khia canh cua snippets", "phi khanh cua snippets", "phi manh cua snippets", "phi hanh cua snippets", "phi anh 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 canh 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 canh cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi canh cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi canh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.