Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet hai » thiet bi, thi hai, thien tai
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
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 thiet hai - canh tranh va thuong cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet hai - canh tranh va thuong cong dan ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc thiet hai - canh tranh va thuong cong dan ((toan cau) OR (toan tap))*.