Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
trinh cua » trinh luat, trinh quan, trinh luan
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » sinh cua, tinh chat, tranh cua
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - hanh ((tinh cua) OR (trinh cua)) nhung cong toan phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((tinh cua) OR (trinh cua)) nhung cong toan phan dau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((tinh cua) OR (trinh cua)) nhung cong toan phan dau*.