Perhaps you should try some spelling variations:
nang luong » nang song
hieu quan » lieu quan, thien quan, lien quan
chinh cua » chinh ca, chinh sua, hinh cua
luong dao » duong dao, truong dao, luong giao
cua nang » chua nang, cua dang, cua hang
dao hoan » dao doanh, vao hoang, do hoa
hoan cau » toan cau, hoa cau, hoang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: moi ((hieu quan) or (hieu qua)) - hanh chinh cua nang luong dao hoan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: moi ((hieu quan) OR (hieu qua)) - hanh chinh cua nang luong dao hoan cau.
• Adding a wildcard symbol may retrieve word variants: moi ((hieu quan) or (hieu qua)) - hanh chinh cua nang luong dao hoan cau*.