Perhaps you should try some spelling variations:
nhung thong » chung thong, nhung chong, nhung phong
manh trung » manh tung, thanh trung, manh hung
hieu lang » chieu sang, hieu quang, nhieu tang
hieu cach » hieu cac, chieu sach, hieu ca
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
thong van » trong van, thong va, thong quan
tan tap » toan tap, han tap, man tap
tan tat » ban tat, toan tap, toan tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (hieu cach)) - manh trung cua nhung thong van ((tan tap) OR (tan tat))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) or (hieu cach)) - manh trung cua nhung thong van ((tan tap) OR (tan tat))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (hieu cach)) - manh trung cua nhung thong van ((tan tap) OR (tan tat))*.