Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hien nhanh » hien hanh, tien thanh, dien thanh
hanh tang » hanh trang, anh tang, hanh mang
qua trong » quan trong, qua trinh, qua song
sang than » cang thang, dang thanh, ban than
tang qua » tang quan, tang cua, tang quy
sang tao » hang tai

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 nhanh) OR (thien thanh)) - hanh tang qua trong cong ((sang than) or (sang tao)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (thien thanh)) - hanh tang qua trong cong ((sang than) OR (sang tao)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (thien thanh)) - hanh tang qua trong cong ((sang than) or (sang tao)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (thien thanh)) - hanh tang qua trong cong ((sang than) or (sang tao)) tap*.