Perhaps you should try some spelling variations:
hien khanh » hien hanh, dien khanh, thien thanh
hien nhanh » hien hanh, thien thanh, tien thanh
tong thong » thong thong, dong thong, cong thong
hanh phan » thanh phan, anh phan, hanh han
thong tai » truong tai, thong tin, hang tai
phan cua » nhan cua, than cua, phat cua
cua tong » cua cong, cua dong, cua nong
tai toan » bai toan, tap toan, tai tuan
toan ban » van ban

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