Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sang » chieu sach, chieu xanh, hieu lang
phan thanh » pham thanh, ban thanh, van thanh
thanh phan » thanh pho, thanh san, thanh toan
phan hung » phan chung, phan ung, phan hong
hung dong » huong dong, vung dong, dung dong
dong tinh » dong kinh, dong tin, cong tinh
toan tap » toan ban

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 (chieu sang)) - phan thanh phan hung dong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (chieu sang)) - phan thanh phan hung dong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (chieu sang)) - phan thanh phan hung dong tinh toan tap*.