Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong dan » tuong dan, thong den, trong dan
thong van » trong van, thong va, thong quan
nhan cach » phan cac
phan dau » phan tu, hang dau

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 - canh tranh cua thong ((thong dan) OR (thong van)) ((nhan cach) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua thong ((thong dan) OR (thong van)) ((nhan cach) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh cua thong ((thong dan) OR (thong van)) ((nhan cach) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua thong ((thong dan) OR (thong van)) ((nhan cach) or (phan dau))*.