Perhaps you should try some spelling variations:
nhung phung » nhung phuong, nhung phong, nhung phun
thanh trung » thanh tung
thien hach » thien thanh
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (hien hanh)) - thanh trung cua nhung phung van ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hien hanh)) - thanh trung cua nhung phung van ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien hach) or (hien hanh)) - thanh trung cua nhung phung van ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (hien hanh)) - thanh trung cua nhung phung van ((phan cau) OR (phan dau))*.