Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
thien thanh » tien thanh, thi thanh, chien tranh
hanh trinh » canh tranh, hanh chinh
chuan xang » chua xang, chuan trang, chua nang
hien hanh » dieu hanh
xang cong » dang cong, bang cong, hang cong
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
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 ((((thien thanh) OR (hien hanh))) or (tieng anh)) - hanh trinh chuan xang cong vang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien thanh) OR (hien hanh))) OR (tieng anh)) - hanh trinh chuan xang cong vang toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thien thanh) OR (hien hanh))) or (tieng anh)) - hanh trinh chuan xang cong vang toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien thanh) OR (hien hanh))) or (tieng anh)) - hanh trinh chuan xang cong vang toan cau*.