Perhaps you should try some spelling variations:
"dac hoc cong snippets" » "dac hoc code snippets", "dac hoc co snippets", "dac cac cong snippets", "dac hoc dung snippets", "dai hoc cong snippets", "dan hoc cong snippets", "day 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 ("dac 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 ("dac hoc cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dac hoc cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dac hoc cong snippets"))) or ("locating bug core snippets"))*.