Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hang tai » hang va, dung tai
hang lai » hang hai, hang loi, hang la
soc ban » hoc ban, coc ban, so ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
5 hoi » o hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty nang ((5 hoi) or (xa hoi)). hieu ve cham soc ban ((hang lai) OR (hang tai)) cau thi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang ((5 hoi) OR (xa hoi)). hieu ve cham soc ban ((hang lai) OR (hang tai)) cau thi.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty nang ((5 hoi) or (xa hoi)). hieu ve cham soc ban ((hang lai) OR (hang tai)) cau thi".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty nang ((5 hoi) or (xa hoi)). hieu ve cham soc ban ((hang lai) OR (hang tai)) cau thi*.