Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thuong con » thuong dong, truong cong, thong cong
hien xanh » hien hanh, chieu xanh, hien khanh
van phan » van phong, van thanh, luan phan
phan cau » phan dau, phan cac, phan tu
hang ca » nang cao, hang tai, hang dau
con van » chon van, cong van, can van

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) OR (hien nhanh)) - thanh ((hang ca) or (hang va)) thuong con van phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh ((hang ca) OR (hang va)) thuong con van phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - thanh ((hang ca) or (hang va)) thuong con van phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - thanh ((hang ca) or (hang va)) thuong con van phan cau*.