Perhaps you should try some spelling variations:
tieng thanh » tien thanh, tieng anh, tieng han
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc tieng » hoc hien
tranh qua » tranh cua, thanh qua, trinh qua
qua dung » quang dung, su dung, qua song
cong dan » cong tan, huong dan, cong dong
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieng thanh - hanh tranh qua dung ((cong dan) OR (((cong san) OR (cong tac)))) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tieng thanh - hanh tranh qua dung ((cong dan) OR (((cong san) OR (cong tac)))) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc tieng thanh - hanh tranh qua dung ((cong dan) OR (((cong san) OR (cong tac)))) toan cau*.