Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam cho hoc snippets" » "dam choi hoc snippets", "dac cho hoc snippets", "day cho hoc snippets", "dam co hoc snippets", "dam khoa hoc 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: (((("dam cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.