Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
chiet tach » chieu sach
hanh trang » thanh trung, hanh trinh, minh trang
cua truong » cua trung, xuan truong, cac truong
cong tac » cong ty
tac vat » tap vat, tac va, tao vat
vat ban » van ban, va ban, vat ran

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chinh sach) or (chiet tach)) - ((hanh trang) OR (canh tranh)) cua truong cong tac vat ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chinh sach) OR (chiet tach)) - ((hanh trang) OR (canh tranh)) cua truong cong tac vat ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chinh sach) or (chiet tach)) - ((hanh trang) OR (canh tranh)) cua truong cong tac vat ban*".