Perhaps you should try some spelling variations:
thuc dang » thuoc dang, thuc dan, thuc dung
dang hanh » dang thanh, ban hanh, dang van
tu sach » thu sach, su sach, te sach
hanh le » thanh le, hanh ve, hanh de
y nang » ly nang, v nang, may nang
va cau » van cau, va dau, va cao
le cua » ly cua
cua te » cua tu

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) or (ky nang)) xa hoi. hieu ((va cau) or (va cac)) thuc dang hanh le cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) xa hoi. hieu ((va cau) OR (va cac)) thuc dang hanh le cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ky nang)) xa hoi. hieu ((va cau) or (va cac)) thuc dang hanh le cua te*.