Perhaps you should try some spelling variations:
trang tuan » tran tuan, trung tuan, tran xuan
trong tuan » trong quan, trung tuan, trong tan
phuong van » phung van, phong van, phuong lan
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
ban thi » dan thi, van thi, can thi

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 - hanh ((trang tuan) OR (trong tuan)) doan phuong van ban thi~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hanh ((trang tuan) OR (trong tuan)) doan phuong van ban thi".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh ((trang tuan) OR (trong tuan)) doan phuong van ban thi*.