Perhaps you should try some spelling variations:
nghiep vua » nghiep va, nghiep vu
thu sach » tu sach, thuat sach, thuoc sach
van anh » van thanh, tuan anh, van minh
ty nang » ty xang, ty hang, ly nang
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
lo van » le van, vo van, so van
cac lo » cac lop, cac co, cac bo
o hoi » co hoi, o hoc, o hai

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) OR (ky nang)) o hoi. hieu ve cac lo van anh ((nghiep vua) or (gian xu)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ky nang)) o hoi. hieu ve cac lo van anh ((nghiep vua) OR (gian xu)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty nang) OR (ky nang)) o hoi. hieu ve cac lo van anh ((nghiep vua) or (gian xu)) te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) OR (ky nang)) o hoi. hieu ve cac lo van anh ((nghiep vua) or (gian xu)) te*.