Perhaps you should try some spelling variations:
"lua rai toan snippets" » "lua rai code snippets", "lua bai toan snippets", "lua tap toan snippets", "lua van toan snippets", "lua lai toan snippets", "luat dai toan snippets", "luan rui toan 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 ("lua rai toan snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"lua rai toan snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( lua rai toan snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("lua rai toan snippets"))) OR ("locating bug core snippets"))*.