Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
vai cua » dai cua, hai cua, lai cua
xa danh » va danh, dia danh, nam danh
nuoc xa » nuoc va, nuoc ta, nuoc xo
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
sach ty » sach tu, sach thu, xach tay
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach y) or (sach ty)) ((nang xa) or (nang ma)) hoi. hieu ve cac nuoc xa danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach y) OR (sach ty)) ((nang xa) OR (nang ma)) hoi. hieu ve cac nuoc xa danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach y) or (sach ty)) ((nang xa) or (nang ma)) hoi. hieu ve cac nuoc xa danh vai cua tre*.