Perhaps you should try some spelling variations:
"dan hoi canh snippets" » "dan hoi code snippets", "dan boi canh snippets", "dan doi canh snippets", "dan hoi danh snippets", "dan hoc canh snippets", "dai hoi canh snippets", "dang khoi canh 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 ("dan hoi canh snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dan hoi canh snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dan hoi canh snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dan hoi canh snippets"))) or ("locating bug core snippets"))*.