Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thuat nhung » thuat hung, thuat chung, thuat chuong
hanh trinh » canh tranh, hanh chinh
tuan nhung » quan nhung, tuan hung, tranh nhung
cong thanh » dong thanh, cong trinh, truong thanh
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu khang - hanh trinh ((tuan nhung) OR (thuat nhung)) ((cong tan) OR (cong thanh)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu khang - hanh trinh ((tuan nhung) OR (thuat nhung)) ((cong tan) or (cong thanh)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: toc thieu khang - hanh trinh ((tuan nhung) OR (thuat nhung)) ((cong tan) or (cong thanh)) toan cau*.