Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
luong toan » luong thanh, truong toan, luong tai
chi chang » thi chang, chi nhanh, thi hang
ve trong » ke trong, te trong, ve tuong
le trong » le trung, ly trong, le tang
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi chang - canh tranh ((ve trong) or (le trong)) cong luong toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi chang - canh tranh ((ve trong) OR (le trong)) cong luong toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chi chang - canh tranh ((ve trong) or (le trong)) cong luong toan ban*.