Perhaps you should try some spelling variations:
khien bang » phien ban, khien dong
quang tuan » quang thanh, quan luan, quang cua
thong cong » trong cong, tong cong, thong thong
hoc khien » hoc hien, hoc nghien, hoc thieu
tung tuan » trung tuan, hung tuan, trang tuan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien bang - thanh ((tung tuan) OR (quang tuan)) thong cong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc khien bang - thanh ((tung tuan) OR (quang tuan)) thong cong dan toan cao*.