Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
chat tong » chat trong, chat long, chat cong
tong cong » trong cong, cong cong, dung cong
cong tinh » cong trinh, cong vinh, long tinh
cac tinh » dac tinh, cuu tinh, ha tinh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chau tinh) or (cac tinh)) - hanh tinh chat tong cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chau tinh) OR (cac tinh)) - hanh tinh chat tong cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chau tinh) or (cac tinh)) - hanh tinh chat tong cong tinh toan ban*.