Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"vi truong dai snippets" » "vi trung dai snippets", "va truong dai snippets", "vu truong dai snippets", "vi truong dai slippers"
"using a java snippets" » "using _ java snippets", "using a java slippers"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"vi truong dai snippets\") OR (\"using a java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi truong dai snippets ) OR ( using a java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi truong dai snippets") OR ("using a java snippets"))) OR ("locating bugs code snippets"))*.