Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chu cham snippets" » "hoc chu chan snippets", "hoc cau cham snippets", "hoc chua chay snippets", "hoc cho cham snippets", "hoc thuc 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: (((("hoc chu 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: (((("hoc chu cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chu cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chu cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.