Perhaps you should try some spelling variations:
"tan hoi cong snippets" » "tan hoi code snippets", "tan hoc cong snippets", "tan hoa cong snippets", "tan hoi dong snippets", "dan hoi cong snippets", "tao hoi cong snippets", "tay 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 ("tan 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 ("tan hoi cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tan hoi cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tan hoi cong snippets"))) or ("locating bug core snippets"))*.