Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, thien tinh, lieu tinh
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
cong bang » cuong bang, dong bang, hong bang
bang than » bang thanh, ban than, sang than
dung thi » dung tai, dung tri, dung thu
dung chi » dung cho, dung chien, chung chi
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) or (chieu tinh)) - thanh ((dung thi) OR (dung chi)) nhung cong bang than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (chieu tinh)) - thanh ((dung thi) OR (dung chi)) nhung cong bang than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) or (chieu tinh)) - thanh ((dung thi) OR (dung chi)) nhung cong bang than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (chieu tinh)) - thanh ((dung thi) OR (dung chi)) nhung cong bang than cau*.