Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hien nhanh » hien hanh, tien thanh, dien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
hanh tang » hanh trang, anh tang, hanh mang
qua trong » quan trong, qua trinh, qua song
tang qua » tang quan, tang cua, tang quy
cong san » cong tac
san tan » van tan, san van, san tay
tan cau » toan cau, van cau, tan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (((hien nhanh) OR (thien thanh)))) - hanh tang qua trong cong san tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (((hien nhanh) OR (thien thanh)))) - hanh tang qua trong cong san tan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (((hien nhanh) OR (thien thanh)))) - hanh tang qua trong cong san tan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (((hien nhanh) OR (thien thanh)))) - hanh tang qua trong cong san tan cau*.