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 van » thanh san, thanh toan, thanh phan
hung cong » nhung cong, hung cuong, phung cong
cong tinh » cong trinh, cong vinh, long tinh
van hung » van dung, manh hung, van duong
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 van hung cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (chieu sang)) - phan thanh van hung cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (chieu sang)) - phan thanh van hung cong tinh toan tap*.