Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc hoc deu snippets" » "quoc hoi deu snippets", "duoc hoc dieu snippets", "duoc hoc de snippets", "duoc hoc dau 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: (((("duoc hoc deu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc hoc deu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc hoc deu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc hoc deu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.