Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac kiem can snippets" » "tac ke can snippets", "thi kiem can snippets", "va kiem can snippets", "tac tiem can snippets", "tac diem can snippets", "tac kiem van 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: (((("tac kiem can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac kiem can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac kiem can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac kiem can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.