Perhaps you should try some spelling variations:
hieu nganh » hiem ngan, hieu manh, nghiep nganh
vien nganh » vien thanh
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
dang cong » dung cong
cua dang » cua cong, cua ban
cong anh » cong danh, dong anh, hong anh
tuan cau » toan cau, quan cau, tuan cu
tuan tu » tuan thu, tran tu, toan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu nganh) OR (vien nganh)) - hanh trung cua dang cong anh ((tuan cau) or (tuan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (vien nganh)) - hanh trung cua dang cong anh ((tuan cau) OR (tuan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu nganh) OR (vien nganh)) - hanh trung cua dang cong anh ((tuan cau) or (tuan tu))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) OR (vien nganh)) - hanh trung cua dang cong anh ((tuan cau) or (tuan tu))*.