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