Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien nhanh » hien hanh, thien thanh, tien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
trung vap » trung cap, trung va, trung van
vap nhung » va nhung, ve nhung, voi nhung
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
phan cau » phan dau, phan cac, phan tu

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