Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
hien xanh » hien hanh, hien nhanh, chieu xanh
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap
hanh va » hanh vi
han va » nhan va, ban va, dan va

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 ((((han va) OR (hanh va))) or (hang va)) truong cong dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((((han va) OR (hanh va))) OR (hang va)) truong cong dan phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh ((((han va) OR (hanh va))) or (hang va)) truong cong dan phan tap".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((((han va) OR (hanh va))) or (hang va)) truong cong dan phan tap*.