Perhaps you should try some spelling variations:
thuyen thanh » chuyen thanh, truyen thanh, tuyen thanh
huyen thanh » nguyen thanh, quyet thanh, huyen trang
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
canh ban » can ban, canh dan, canh van
ban quan » van quan
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cac » phan cac, chon cac, nhan cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thuyen thanh) or (huyen thanh)) - canh ban quan tong cong dan chan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thuyen thanh) OR (huyen thanh)) - canh ban quan tong cong dan chan cac.
• Adding a wildcard symbol may retrieve word variants: hoc ((thuyen thanh) or (huyen thanh)) - canh ban quan tong cong dan chan cac*.