Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
khung cua » chung cua, khung luan, chung cu
thong den » thong dien, thong dan, tuong den
hung cua » huong cua, chung cua, dung cua
den toan » dien toan, dan toan, den tran
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: hoc ((chieu xanh) or (chieu tinh)) - manh ((hung cua) OR (khung cua)) thong thong den toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - manh ((hung cua) OR (khung cua)) thong thong den toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu tinh)) - manh ((hung cua) OR (khung cua)) thong thong den toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu tinh)) - manh ((hung cua) OR (khung cua)) thong thong den toan cao*.