Perhaps you should try some spelling variations:
nang doc » nang luc
tinh cuu » trinh cuu, dinh cuu, tinh cua
tu sach » thu sach, su sach, te sach
doc loi » duc loi
hieu ve » hieu va, hieu van
xa hanh » xa thanh, xa khanh, da hanh
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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 doc loi. hieu ve cam xuc ((xa hanh) OR (va hanh)) tinh cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang doc loi. hieu ve cam xuc ((xa hanh) OR (va hanh)) tinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang doc loi. hieu ve cam xuc ((xa hanh) OR (va hanh)) tinh cuu tre*.