Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
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 hanh - 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 hanh - thanh trung vap nhung ((cong san) OR (cong tan)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh trung vap nhung ((cong san) or (cong tan)) phan cau*.