Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thang trong » thong trong, than trong, khoang trong
hien nhanh » hien hanh, tien thanh, dien thanh
thang rong » thang long, thanh cong, thanh long
doanh toan » doanh hoan, doanh doanh, doanh thanh
hanh tang » hanh trang, anh tang, hanh mang
tang cua » mang cua, hang cua, tang luan
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 nhanh) or (thien thanh)) - hanh tang cua ((thang rong) OR (thang trong)) doanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (thien thanh)) - hanh tang cua ((thang rong) OR (thang trong)) doanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) or (thien thanh)) - hanh tang cua ((thang rong) OR (thang trong)) doanh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (thien thanh)) - hanh tang cua ((thang rong) OR (thang trong)) doanh toan ban*.