Perhaps you should try some spelling variations:
thanh mai » thanh hai, thanh tai, thanh moi
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
truc va » thuc va, thuc vat, trung va
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
tuc va » thuc va, tuc xa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang ma hoi. hieu ve cac ((tuc va) or (truc va)) thanh mai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ma hoi. hieu ve cac ((tuc va) OR (truc va)) thanh mai va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ma hoi. hieu ve cac ((tuc va) or (truc va)) thanh mai va triet*.