Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, thien tinh, lieu tinh
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh quan » tinh quang, trinh luat, trinh han
cong cong » cong dong, trong cong, dung cong
tinh cua » trinh cua, sinh cua, tinh chat
cong van » cong vang, cong san, song van
van tai » von tai, van tuan
tai tap » bai tap, tai tao, hai 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 ((thieu tinh) or (chieu tinh)) - hanh ((trinh quan) or (tinh cua)) cong cong van tai tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (chieu tinh)) - hanh ((trinh quan) OR (tinh cua)) cong cong van tai tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (chieu tinh)) - hanh ((trinh quan) or (tinh cua)) cong cong van tai tap*.