Perhaps you should try some spelling variations:
nang khoa » hang khoa, dang khoa, nang hoa
khoa hoc » hoa hoc
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
luu van » cuu van, luan van, luu hanh
duc van » duc va, duc tan, duc manh
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua

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 khoa hoc. lieu va cac ((luu van) or (duc van)) hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang khoa hoc. lieu va cac ((luu van) OR (duc van)) hanh vi cua cau*.