Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
thuong manh » thuong mach, thuong nganh, thuong mai
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, tran tuan, truong thanh
hien sang » hien trang, khien bang, thien bang
manh toan » thanh toan, anh tuan, tinh toan
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: hoc ((hien sang) or (chieu sang)) - thanh ((trung tuan) OR (trung tam)) thong thuong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sang) OR (chieu sang)) - thanh ((trung tuan) OR (trung tam)) thong thuong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sang) or (chieu sang)) - thanh ((trung tuan) OR (trung tam)) thong thuong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sang) or (chieu sang)) - thanh ((trung tuan) OR (trung tam)) thong thuong manh toan cau*.