Just note down issues i faced in vim.
Search word under the cursor - * or # for backward/forward, respectively.
Search selected text in visual mode -
y (yank the selected text into " register by default)
/ (enter search mode)
(\ V) (can skill, it's optional. enter "very no magic" mode*)
Ctrl + r " (paste text from " register)
Enter (go!)
Reference: https://superuser.com/questions/41378/how-to-search-for-selected-text-in-vim