Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien thanh
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
canh ban » can ban, canh dan, canh van
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau
ban cua » ban quan

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 anh) or (hien hanh)) - canh ban cua thong cong tan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hien hanh)) - canh ban cua thong cong tan phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hien hanh)) - canh ban cua thong cong tan phan dau*.