Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"co trach do snippets" » "co trach code snippets", "bo trach do snippets", "co tranh do snippets", "co tich do snippets", "co trinh do snippets", "co thanh do snippets", "co hoach do 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: (((("co trach do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co trach do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( co trach do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co trach do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.