Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
trung vap » trung cap, trung van, trung lap
trung va » truong va, trang va, trung ha
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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 - hanh ((trung vap) OR (trung va)) nhung cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh ((trung vap) OR (trung va)) nhung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((trung vap) OR (trung va)) nhung cong dan toan ban*.