Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
hien xanh » hien hanh, chieu xanh, hien khanh
trung vai » trung dai, trung va, trung van
vai nhung » va nhung, voi nhung, vap nhung
toan ban » van ban
than cap » khan cap, thanh lap, thanh cac

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 trung vai nhung cong thanh ((toan ban) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh trung vai nhung cong thanh ((toan ban) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - thanh trung vai nhung cong thanh ((toan ban) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - thanh trung vai nhung cong thanh ((toan ban) or (than cap))*.