Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
trung cua » truong cua, trung tuan, trung cap
truong va » truong dai, truong cao, truong dao
hoc hieu » hoc thieu, hoc hien, doc hieu
cong ban » cong bang, cong san, cong tan
ban phan » ban phap, van phan, ban than
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 hieu nganh - thanh ((trung cua) or (truong va)) trong cong ban phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - thanh ((trung cua) OR (truong va)) trong cong ban phan cau*.