Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"vi anh trac slippery" » "vi sinh trac slippery", "vi anh tuan slippery", "vi anh thuc slippery", "vi hanh trac slippery", "vu anh trac slippery", "va anh trac slippery", "vi anh trac slippers"

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

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