Perhaps you should try some spelling variations:
hien hanh » dieu hanh
khien hoc » nhiet hoc, dien hoc
truc may » tren may, truc va
tu sach » thu sach, su sach, te sach
xuc may » xuc hay, phuc may
tinh va » tich va, trinh van, trinh vat
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
va cuu » va cau, va chu, va huu
x hoi » xa hoi, o hoi, x ho

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 hoi. dieu ((khien hoc) or (hien hanh)) ((xuc may) or (truc may)) tinh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. dieu ((khien hoc) OR (hien hanh)) ((xuc may) OR (truc may)) tinh va cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. dieu ((khien hoc) or (hien hanh)) ((xuc may) or (truc may)) tinh va cuu tre*.