Perhaps you should try some spelling variations:
"mon thi cham snippets" » "mon thi code snippets", "mon thi hai snippets", "mon toc cham snippets", "mon thi ha snippets", "mon tai cham snippets", "doan thi cham snippets", "dong thi cham snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("mon thi cham snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("mon thi cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( mon thi cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("mon thi cham snippets"))) or ("locating bug core snippets"))*.