Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tuong cua » truong cua, huong cua, thong cua
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
tung cua » trung cua, dung cua, tang cua
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 - thanh ((tung cua) OR (tuong cua)) ((hang cong) or (dung cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh ((tung cua) OR (tuong cua)) ((hang cong) OR (dung cong)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - thanh ((tung cua) OR (tuong cua)) ((hang cong) or (dung cong)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh ((tung cua) OR (tuong cua)) ((hang cong) or (dung cong)) dan than cao*.