Perhaps you should try some spelling variations:
"thi hoa cong snippets" » "thi hoa code snippets", "thi cua cong snippets", "thi va cong snippets", "thi hoa co snippets", "thi hoan cong snippets", "thi ha cong snippets", "thi hong 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 ("thi hoa 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 ("thi hoa cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( thi hoa cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("thi hoa cong snippets"))) or ("locating bug core snippets"))*.