Perhaps you should try some spelling variations:
thuyet thanh » quyet thanh, thuyet trinh, huyen thanh
huyet thanh » quyet thanh, huyen thanh, chuyen thanh
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
nhan cach » phan cac
canh ban » can ban, canh dan, canh van
ban quan » van quan
cong dan » cong san, cong tan, huong dan
chan cac » phan cac, chon cac, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thuyet thanh) or (huyet thanh)) - canh ban quan tong cong dan ((chan cac) OR (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thuyet thanh) OR (huyet thanh)) - canh ban quan tong cong dan ((chan cac) OR (nhan cach)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thuyet thanh) or (huyet thanh)) - canh ban quan tong cong dan ((chan cac) OR (nhan cach))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thuyet thanh) or (huyet thanh)) - canh ban quan tong cong dan ((chan cac) OR (nhan cach))*.