Perhaps you should try some spelling variations:
tien manh » tien anh, tien thanh, tieng anh
hien hanh » dieu hanh
anh hoang » thanh hoang, minh hoang, tnhh hoang
hoang qua » hoang quan, hoang quy, hoang xuan
trong van » trong cac
qua dung » quang dung, su dung, qua song
toan cau » toan ban, toan tap, toan tai
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 ((tien manh) or (hien hanh)) - anh hoang qua dung trong van ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien manh) OR (hien hanh)) - anh hoang qua dung trong van ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (hien hanh)) - anh hoang qua dung trong van ((toan cau) or (toan cao))*.