Perhaps you should try some spelling variations:
chung tuong » chung thong, nhung tuong, chuong duong
chieu sang » chieu sach, chieu xanh, hieu lang
trinh luan » trinh quan, trinh han, trinh toan
tuong dan » huong dan, tung dan, xuong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) or (trieu tinh)) - hanh ((trinh luan) OR (trinh luat)) chung tuong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (trieu tinh)) - hanh ((trinh luan) OR (trinh luat)) chung tuong dan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) or (trieu tinh)) - hanh ((trinh luan) OR (trinh luat)) chung tuong dan than tap".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (trieu tinh)) - hanh ((trinh luan) OR (trinh luat)) chung tuong dan than tap*.