Perhaps you should try some spelling variations:
hien khanh » hien hanh, hien nhanh, dien khanh
tien thanh » tien thinh, tran thanh, den thanh
dong thong » thong thong, nong thon, dong thanh
thong tai » truong tai, thong tin, hang tai
hanh han » hanh nhan, hanh phan, hanh san
cua dong » chua dong, cua cong, cua dang
tai toan » bai toan, tap toan, tai tuan
toan cao » toan ban, toan tap
han cua » hang cua, nhan cua, than cua

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 khanh) or (tien thanh)) - hanh han cua dong thong tai toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien khanh) OR (tien thanh)) - hanh han cua dong thong tai toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien khanh) or (tien thanh)) - hanh han cua dong thong tai toan cao*.