Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh phan » thanh phan, anh phan, hanh han
cong tinh » cong trinh, cong vinh, long tinh
hanh san » thanh san, khach san, thanh son
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (hieu manh)) - ((hanh phan) or (hanh san)) va nhung cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu manh)) - ((hanh phan) OR (hanh san)) va nhung cong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu manh)) - ((hanh phan) or (hanh san)) va nhung cong tinh toan cau*.