Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tap
phan dau » 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 thiet anh - canh tranh va nhung cong dan ((((toan cau) or (phan tu))) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet anh - canh tranh va nhung cong dan ((((toan cau) OR (phan tu))) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet anh - canh tranh va nhung cong dan ((((toan cau) or (phan tu))) or (phan dau))*.