Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
tran hoang » tran hong, quan hoang, tran quang
hien xanh » hien hanh, chieu xanh, hien khanh
lang cong » dang cong, bang cong, hang cong
hoang va » hoang van, hang va, hoang ha
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) OR (hien nhanh)) - tran hoang va lang cong dan than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - tran hoang va lang cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - tran hoang va lang cong dan than cap*.