Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong trinh » chuong trinh, cong trinh, huong tran
chieu sang » chieu sach, chieu xanh, hieu lang
luan nhung » luan chung, luan hung, quan nhung
trinh tran » trinh trang, trinh toan, trinh tren
hieu van » hieu va, thien van, lieu va
tran cau » tran chau, toan cau, ran cau
ha dung » hai dung, hat dung, kha dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (hieu van)) - ha dung luan nhung phuong trinh tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu van)) - ha dung luan nhung phuong trinh tran cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu van)) - ha dung luan nhung phuong trinh tran cau*.