Perhaps you should try some spelling variations:
nghiep cua » nghiep vua, nghiep luan, nghien cuu
thu sach » tu sach, thuat sach, thuoc sach
gian cua » gian xu, ban cua
lo tuan » do tuan, le tuan, lo tan
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
mo hoc » mon hoc, co hoc
ve cac » va cac, vien cac
cac lo » cac lop, cac co, cac bo
o hoc » co 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: thu sach ty nang ((o hoc) OR (mo hoc)). hieu ve cac lo tuan anh ((nghiep cua) or (gian cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((o hoc) OR (mo hoc)). hieu ve cac lo tuan anh ((nghiep cua) OR (gian cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((o hoc) OR (mo hoc)). hieu ve cac lo tuan anh ((nghiep cua) or (gian cua)) te".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((o hoc) OR (mo hoc)). hieu ve cac lo tuan anh ((nghiep cua) or (gian cua)) te*.