Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
trong vang » trong van, trong dang, trong tang
hieu lang » chieu sang, nhieu tang, hieu van
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
vang tuan » van tuan, vong tuan, quang tuan
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho ((hieu lang) OR (hieu quang)) - hanh ((trang cua) or (trung cua)) dung trong vang tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho ((hieu lang) OR (hieu quang)) - hanh ((trang cua) OR (trung cua)) dung trong vang tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho ((hieu lang) OR (hieu quang)) - hanh ((trang cua) or (trung cua)) dung trong vang tuan cau".
• Adding a wildcard symbol may retrieve word variants: nho ((hieu lang) OR (hieu quang)) - hanh ((trang cua) or (trung cua)) dung trong vang tuan cau*.