Perhaps you should try some spelling variations:
luan phan » luan van, luan hoan
phan lap » phan dau
xuc luan » luc luan, xu luan, nuoc luan
tu sach » thu sach, su sach, te sach
vu cham » va cham, vu kham, tu cham
lap cuu » cap cuu, lap cua
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
ve cam » ve cham, ve cac, va cam
o hoc » mo hoc, so hoc, y hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ((o hoc) or (co hoc)). hieu ((ve cam) or (vu cham)) xuc luan phan lap cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((o hoc) OR (co hoc)). hieu ((ve cam) OR (vu cham)) xuc luan phan lap cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((o hoc) or (co hoc)). hieu ((ve cam) or (vu cham)) xuc luan phan lap cuu tre*.