Perhaps you should try some spelling variations:
nhung cang » nhung cong, nhung lang, nhung bang
cang luong » nang luong, cong luong, hang luong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
chinh ve » chinh va, chinh vi, chinh viet
chinh ke » chinh che, chinh ta, chinh va
toan tai » toan tap, doanh tai, toan ban
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 hieu manh - hanh ((chinh ve) OR (chinh ke)) nhung cang luong ((toan tai) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((chinh ve) OR (chinh ke)) nhung cang luong ((toan tai) OR (toan cao))*.