Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
chieu sang » chieu sach, chieu xanh, hieu lang
trong sinh » trong kinh, trong san
trinh cua » trinh luat, trinh quan, trinh luan
sinh toan » tinh toan, hinh toan, minh toan
tinh cua » sinh cua, tinh chat, tranh cua
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chinh sach) or (chieu sang)) - hanh ((tinh cua) OR (trinh cua)) nhung trong sinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chinh sach) OR (chieu sang)) - hanh ((tinh cua) OR (trinh cua)) nhung trong sinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chinh sach) or (chieu sang)) - hanh ((tinh cua) OR (trinh cua)) nhung trong sinh toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (chieu sang)) - hanh ((tinh cua) OR (trinh cua)) nhung trong sinh toan tap*.