Perhaps you should try some spelling variations:
"hat hoc cong snippets" » "hat hoc code snippets", "hat hoc co snippets", "hat cac cong snippets", "hat hoc dung snippets", "chat hoc cong snippets", "vat hoc cong snippets", "thai hoc cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

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 ("hat hoc 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 ("hat hoc cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hat hoc cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hat hoc cong snippets"))) or ("locating bug core snippets"))*.