Perhaps you should try some spelling variations:
"hoc hai cham snippets" » "hoc hai code snippets", "hoc hai pham snippets", "hoc hoi cham snippets", "hoc hai chau snippets", "hoc dai cham snippets", "hoc bai cham snippets", "hoc tai 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 ("hoc hai 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 ("hoc hai cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hoc hai cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hoc hai cham snippets"))) or ("locating bug core snippets"))*.