Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thanh hang » thanh hoang, thanh thang, tranh hang
ngang tuan » hoang tuan, nganh toan, trang tuan
quang tuan » quang thanh, quan luan, quang cua
hieu lang » chieu sang, hieu quang, nhieu tang
hanh hang » hang hang, hanh han, hanh mang
doc hieu » toc thieu, hoc thieu, hoc hien
va thong » va thuong, va phuong, he thong

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

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