Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
ngang toan » nganh toan, dang toan, quang toan
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
toan cau » 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: theo chua xang - hanh ((trinh va) or (trinh van)) ((nhung cong) OR (thong cong)) ngang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chua xang - hanh ((trinh va) OR (trinh van)) ((nhung cong) OR (thong cong)) ngang toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chua xang - hanh ((trinh va) or (trinh van)) ((nhung cong) OR (thong cong)) ngang toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chua xang - hanh ((trinh va) or (trinh van)) ((nhung cong) OR (thong cong)) ngang toan cau*.