Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong dong, truong cong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thuong con » thuong dong, truong cong, thong cong
anh nang » ganh nang, anh bang, anh dang
nang cua » mang cua, hang cua, nang dua
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - anh nang cua ((thuong cong) OR (thuong con)) dan ((than cao) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - anh nang cua ((thuong cong) OR (thuong con)) dan ((than cao) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - anh nang cua ((thuong cong) OR (thuong con)) dan ((than cao) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - anh nang cua ((thuong cong) OR (thuong con)) dan ((than cao) or (than cap))*.