Perhaps you should try some spelling variations:
nang hoc » nang doc, nang luc, dong hoc
duc minh » duc anh
van tuan » van quan, van ban, anh tuan
tuan cuc » tuan cu, quan chuc, tuan khuc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hoc hai » hoc dai, hoc bai, hoc tai
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
duc van » duc va, duc tan, duc manh
cuc tre » duc tre, cua tre, cuu tre
ve cac » va cac, vien cac

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 hoc hai. hieu ve cac ((xuc ban) or (((duc van) or (duc minh)))) van tuan cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang hoc hai. hieu ve cac ((xuc ban) OR (((duc van) OR (duc minh)))) van tuan cuc tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang hoc hai. hieu ve cac ((xuc ban) or (((duc van) or (duc minh)))) van tuan cuc tre*.