Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
tuan chau » chuan chau, thanh chau, tuan thu
tran chau » tranh chap, tran huu
doc hieu » toc thieu, hoc thieu, hoc hien
va thong » va thuong, va phuong, he thong
cong van » cong vang, cong san, song van

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 trang) or (hanh trinh)) va thong cong van ((tuan chau) OR (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - ((hanh trang) OR (hanh trinh)) va thong cong van ((tuan chau) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu lang - ((hanh trang) or (hanh trinh)) va thong cong van ((tuan chau) OR (tran chau))".
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - ((hanh trang) or (hanh trinh)) va thong cong van ((tuan chau) OR (tran chau))*.