Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
hien tinh » khien tinh, thien tinh, bien tinh
tranh cac » trinh cac, thanh cac, tranh cai
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

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 tinh - canh tranh cac truong cong tan chan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - canh tranh cac truong cong tan chan cau*.