Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
va trien » va truyen, va thiet, va tuyen
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
va va » va van, va vua, va vai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ma hoa. hieu ((qua cac) or (cua cac)) duc va thanh va va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoa. hieu ((qua cac) OR (cua cac)) duc va thanh va va trien.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoa. hieu ((qua cac) or (cua cac)) duc va thanh va va trien*.