Perhaps you should try some spelling variations:
"huu hoi cong snippets" » "huu hoi code snippets", "huu hoc cong snippets", "huu hoa cong snippets", "huu hoi dong snippets", "huu ho cong snippets", "huu hai cong snippets", "cuu hoi cong 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 ("huu hoi cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("huu hoi cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( huu hoi cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("huu hoi cong snippets"))) or ("locating bug core snippets"))*.