Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
nhanh than » nhanh thanh, nhanh thang, nhanh thai
cua thuong » cua truong, cua phuong, ca thuong
hieu lang » chieu sang, hieu quang, nhieu tang
than cua » nhan cua, thai cua, ban cua
tac cay » tac can, tao cay, cac cay
tac ca » tac cua, tac can, mac ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (trieu tinh)) - nhanh than cua thuong cong ((tac ca) OR (tac cay)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (trieu tinh)) - nhanh than cua thuong cong ((tac ca) OR (tac cay)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) or (trieu tinh)) - nhanh than cua thuong cong ((tac ca) OR (tac cay)) cau".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (trieu tinh)) - nhanh than cua thuong cong ((tac ca) OR (tac cay)) cau*.