Perhaps you should try some spelling variations:
"thu hoc cung snippets" » "thu hoc code snippets", "thu hoc ung snippets", "thu hoc cong snippets", "thu hoc dung snippets", "tu hoc cung snippets", "thu hoi cung snippets", "tru 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 ("thu hoc cung snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"thu hoc cung snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( thu hoc cung snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("thu hoc cung snippets"))) OR ("locating bug core snippets"))*.