Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trong thai » trong thoi, trong thuat, trong nha
thong phan » thong quan, chong phap, thong van
trong thi » trong thoi, trong thu, trong tho
phan tran » phan tan, pham tran, phan than
cua tinh » cua sinh, va tinh, ha tinh
tran cau » tran chau, toan cau, ran cau

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 (cua tinh)) - hanh ((trong thai) OR (trong thi)) thong thong phan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (cua tinh)) - hanh ((trong thai) OR (trong thi)) thong thong phan tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (cua tinh)) - hanh ((trong thai) OR (trong thi)) thong thong phan tran cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (cua tinh)) - hanh ((trong thai) OR (trong thi)) thong thong phan tran cau*.