Perhaps you should try some spelling variations:
"thuat chan 1 snippets" » "thuat toan 1 snippets", "thuat san 1 snippets", "thuat han 1 snippets", "thuat chan 6 snippets", "thuat chan o snippets", "thuat chan 1 slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("thuat chan 1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuat chan 1 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuat chan 1 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuat chan 1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.