Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet

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) or (thuat sach)) ky ((nang xa) or (nang ma)) hoi. hieu ve pham duc va hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky ((nang xa) OR (nang ma)) hoi. hieu ve pham duc va hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky ((nang xa) or (nang ma)) hoi. hieu ve pham duc va hanh thai cua tre*.