Perhaps you should try some spelling variations:
khien bang » phien ban, khien dong, khien vong
hanh trung » thanh trung, hanh trang, manh trung
hoc khien » hoc hien, hoc nghien, hoc thieu
trung cap » truong cao, trung tam
cap trong » cay trong, ca trong, cad trong
thanh bai » thanh hai, thanh oai, thanh bac
thanh tai » thanh hai, thanh toan, doanh tai
cong san » cong tac

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 - hanh trung cap trong cong san ((thanh bai) OR (thanh tai))~".
• Adding a wildcard symbol may retrieve word variants: hoc khien bang - hanh trung cap trong cong san ((thanh bai) OR (thanh tai))*.