Perhaps you should try some spelling variations:
minh thanh » dinh thanh, tinh thanh, hinh thanh
thanh vai » thanh hai, thanh van, thanh tai
nuoc minh » ngoc minh, nuoc kinh, luoc kinh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
nang xa » lang xa, nang ma, mang xa
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va
sach ky » sac ky, sach y, sach ty
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((nang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cac nuoc minh thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu van)) cac nuoc minh thanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cac nuoc minh thanh vai cua te*".