Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac cho hoc snippets" » "tac chon hoc snippets", "dac cho hoc snippets", "tap cho hoc snippets", "tac co hoc snippets", "tac 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: (((("tac 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: (((("tac cho hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac cho hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac cho hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.