Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu sang » chieu sach, chieu xanh, hieu lang
trinh quan » tinh quang, trinh han
phuong ban » phuong bang, phuong lan, phuong bac
ho chieu » theo chieu, hoc thieu, doi chieu
ban toan » bai toan, ban than, van toan
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: ho chieu sang - hanh ((trinh quan) OR (trinh luat)) nhung phuong ban toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((trinh quan) OR (trinh luat)) nhung phuong ban toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((trinh quan) OR (trinh luat)) nhung phuong ban toan cau*.