Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc lao dong snippets" » "hoc ha dong snippets", "hoc van dong snippets", "hoc cao dong snippets", "hoc lam dong snippets", "hoc bao dong 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: (((("hoc lao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc lao dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc lao dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc lao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.