Perhaps you should try some spelling variations:
"tri hoc cung snippets" » "tri hoc code snippets", "tri hoc ung snippets", "tri hoc cong snippets", "tri hoc dung snippets", "triet hoc cung snippets", "tri thuc cung snippets", "thai hoc cung 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 ("tri hoc cung snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tri hoc cung snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tri hoc cung snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tri hoc cung snippets"))) or ("locating bug core snippets"))*.