Perhaps you should try some spelling variations:
quan thanh » ban thanh, van thanh
tran thanh » ban thanh, van thanh
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh hang » thanh hang, hang hang, hanh han
cua thong » cua thuong, cua khong, cua tong
thong tai » truong tai, thong tin, hang tai
hang cua » mang cua, hang ca, huong cua
tai toan » bai toan, tap toan, tai tuan
toan tap » toan 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 xanh) or (((tran thanh) OR (quan thanh)))) - hanh hang cua thong thong tai toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (((tran thanh) OR (quan thanh)))) - hanh hang cua thong thong tai toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (((tran thanh) OR (quan thanh)))) - hanh hang cua thong thong tai toan tap*".