Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh tuan » thanh toan, thanh xuan, thanh thanh
hieu lang » chieu sang, hieu quang, nhieu tang
chinh ca » chinh ta, chinh tai, chinh cho
chinh va » chinh ta, chinh tai, hanh va
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: ho ((hieu lang) or (thieu quang)) - hanh ((chinh ca) OR (chinh va)) nhung cong thanh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (thieu quang)) - hanh ((chinh ca) OR (chinh va)) nhung cong thanh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (thieu quang)) - hanh ((chinh ca) OR (chinh va)) nhung cong thanh tuan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (thieu quang)) - hanh ((chinh ca) OR (chinh va)) nhung cong thanh tuan cau*.