Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thien » hoc hien, hoc thieu, hoc thiet
thien anh » thien danh, tien anh, thien thanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
toan cau » toan cao, toan ban, toan tap
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 thien anh - hanh tranh cua ((nhung cong) or (dung cong)) dan ((toan cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien anh - hanh tranh cua ((nhung cong) OR (dung cong)) dan ((toan cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thien anh - hanh tranh cua ((nhung cong) or (dung cong)) dan ((toan cau) or (phan cau))*.