Perhaps you should try some spelling variations:
thuoc tai » hoc tai, thuoc ma, thuc tap
nuoc tai » nuoc thai, luc tai, nuoc va
hanh hai » thanh hai, nhanh hai, hang hai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve bach » ve cach, vu bach, vi bach
thuc va » thuc vat, thuc dan, thuc day
hai cuu » hai cua, hai chu, hai cuc
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang

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 x ho. hieu ve bach ((((thuoc tai) OR (nuoc tai))) or (thuc va)) hanh hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x ho. hieu ve bach ((((thuoc tai) OR (nuoc tai))) OR (thuc va)) hanh hai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x ho. hieu ve bach ((((thuoc tai) OR (nuoc tai))) or (thuc va)) hanh hai cuu tre*".