Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
cong san » cong tac
toan cao » toan ban
toan tap » toan ban

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 khang - canh tranh va thong cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - canh tranh va thong cong san ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - canh tranh va thong cong san ((toan cao) or (toan tap))*.