Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sang » chieu sach, chieu xanh, hieu lang
thong cua » thong quan, thong tu, huong cua
tong cong » trong cong, cong cong, dung cong
cong tinh » cong trinh, cong vinh, long tinh
mang cua » manh cua, dung cua, ban cua
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: ho ((hieu nganh) or (chieu sang)) - hanh ((thong cua) or (mang cua)) tong cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu nganh) OR (chieu sang)) - hanh ((thong cua) OR (mang cua)) tong cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu nganh) or (chieu sang)) - hanh ((thong cua) or (mang cua)) tong cong tinh toan cao*.