Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, cua tinh, cac tinh
trinh ven » trinh van, trinh den, tinh ven
trinh ve » trinh he, trinh va, trinh vi
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan tap » toan ban
ha tinh » va tinh, may tinh

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 (ha tinh)) - hanh ((trinh ve) or (trinh ven)) nhung cong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chau tinh) OR (ha tinh)) - hanh ((trinh ve) OR (trinh ven)) nhung cong van toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chau tinh) or (ha tinh)) - hanh ((trinh ve) or (trinh ven)) nhung cong van toan tap*.