Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
huu phuc » huu thuc, huu phach, huu duc
va hang » van hang, va nang, va lang
phuc va » phuc vu, thuc va, chuc va
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
ma hoi » mai hoi, xa hoi, ma hoa
va cua » va chua, via cua, ca cua

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 ky nang ((ma hoi) or (dai hoi)). ((hieu ve) or (thien van)) huu phuc va hang va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ((ma hoi) OR (dai hoi)). ((hieu ve) OR (thien van)) huu phuc va hang va cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang ((ma hoi) or (dai hoi)). ((hieu ve) or (thien van)) huu phuc va hang va cua tre*.