Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » hanh chinh
dong thanh » truong thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
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 chieu tinh - ((hanh trinh) OR (canh tranh)) cua tong ((cong tan) or (dong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - ((hanh trinh) OR (canh tranh)) cua tong ((cong tan) OR (dong thanh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - ((hanh trinh) OR (canh tranh)) cua tong ((cong tan) or (dong thanh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - ((hanh trinh) OR (canh tranh)) cua tong ((cong tan) or (dong thanh)) toan ban*.