Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
tinh dinh » trinh dinh, tinh ninh, tinh binh
nhung don » nhung van, nhung bo
dang cong » dung cong
tran chau » tranh chap, tran huu
dinh cuu » dinh chi

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)) - tinh dinh cuu ((nhung don) or (dang cong)) tan tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - tinh dinh cuu ((nhung don) OR (dang cong)) tan tran chau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - tinh dinh cuu ((nhung don) or (dang cong)) tan tran chau*".