Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc danh ca snippets" » "hoc dan ca snippets", "hoc anh ca snippets", "hoc hanh ca snippets", "hoc doanh cua snippets", "hoc danh cho 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 danh ca 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 danh ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc danh ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc danh ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.