Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khoi dan tra snippets" » "hoi dan tra snippets", "choi dan tra snippets", "khoi can tra snippets", "khoi dan ta snippets", "khoi van tra snippets", "khoi dang tran snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoi dan tra snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"khoi dan tra snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( khoi dan tra snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi dan tra snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.