Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"nao tao duc snippets" » "dao tao duc snippets", "nao tai duc snippets", "nhan tao duc snippets", "nao tao duoc snippets", "nao dao duc snippets", "nao tho duc snippets"

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

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