Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh han » trinh quan
tinh vai » tinh va, tinh hai, tinh bai
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca 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 tinh - canh ((tinh vai) or (trinh han)) thong cong dan ((chan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - canh ((tinh vai) OR (trinh han)) thong cong dan ((chan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - canh ((tinh vai) or (trinh han)) thong cong dan ((chan cau) or (can cau))*.