Perhaps you should try some spelling variations:
thuong luong » theo luong, thong thuong
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
cong luong » cong thuong, nang luong, cong dong
tranh cua » doanh cua, manh cua
cao toan » bao toan, cao tan, cao doanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (thieu khang)) - hanh tranh cua ((thuong luong) OR (cong luong)) cao toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - hanh tranh cua ((thuong luong) OR (cong luong)) cao toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (thieu khang)) - hanh tranh cua ((thuong luong) OR (cong luong)) cao toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu khang)) - hanh tranh cua ((thuong luong) OR (cong luong)) cao toan cao*.