Perhaps you should try some spelling variations:
ninh viet » sinh vien, anh viet
quy ninh » quy dinh, qua ninh, quy trinh
dua tren » dung tren
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cua tre » cuu tre, cua triet, cua thep
duc quy » duc duy, duc huy, duy quy
sach ty » sach y, sach tu, sach thu
cac duc » cac du, cao duc, cac dac
van cac » van hac, van cau, van bac
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
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: te sach ty nang ma hoi. hieu van cac duc quy ninh viet ((((cua tre) or (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ma hoi. hieu van cac duc quy ninh viet ((((cua tre) OR (dua tren))) OR (cua te))*.