Perhaps you should try some spelling variations:
trang tuan » tran tuan, trung tuan, trong tuan
phap sinh » phau sinh, phai sinh, phap tinh
trang qua » trong qua, trong quan, trung quan
dung cong » dung trong
thi phap » theo phap, thi hai, thi ha
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thi phap sinh - hanh ((trang qua) OR (trang tuan)) dung cong tan ((toan cau) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thi phap sinh - hanh ((trang qua) OR (trang tuan)) dung cong tan ((toan cau) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: thi phap sinh - hanh ((trang qua) OR (trang tuan)) dung cong tan ((toan cau) or (van ban))*.