Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tap hanh che snippets" » "tap thanh che snippets", "tap hinh che snippets", "tap danh che snippets", "tap han che snippets", "tap hanh he snippets", "tap hanh nghe 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: (((("tap hanh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tap hanh che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tap hanh che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tap hanh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.