Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
cong thanh » dong thanh, cong trinh, truong thanh
hoc thien » hoc hien, hoc thieu, hoc thiet
thien anh » thien danh, tien anh, thien thanh
cong tan » cong tac, cong san, cong ty
va dung » van dung, va duong, vat dung
ran cau » van cau, ban cau, can 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 thien anh - ((hanh trang) or (hanh trinh)) va dung ((cong tan) OR (cong thanh)) ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien anh - ((hanh trang) OR (hanh trinh)) va dung ((cong tan) OR (cong thanh)) ran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien anh - ((hanh trang) or (hanh trinh)) va dung ((cong tan) OR (cong thanh)) ran cau".
• Adding a wildcard symbol may retrieve word variants: hoc thien anh - ((hanh trang) or (hanh trinh)) va dung ((cong tan) OR (cong thanh)) ran cau*.