Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
va tinh » may tinh
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa
do cua » doi cua, co cua, de cua
cua te » cua tu

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 y nang ma hoi. hieu ((ve cac) or (vien bach)) xuc ((va thanh) OR (va tinh)) do cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ((ve cac) OR (vien bach)) xuc ((va thanh) OR (va tinh)) do cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ma hoi. hieu ((ve cac) or (vien bach)) xuc ((va thanh) OR (va tinh)) do cua te*".