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 » thong van, tuong dan, thong den
nhan cach » phan cac
phan dau » phan tu
hang dau » hang va, hang tai

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