Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bat moc cham snippets" » "bat toc cham snippets", "bat moc chau snippets", "bat hoc chat snippets", "bat coc cham snippets", "bat moi cham snippets", "bat buoc cham 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: (((("bat moc cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bat moc cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bat moc cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bat moc cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.