Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, nang cai
danh dau » lanh dao, hang dau, danh tu
lang mai » lang dai, lang hai, lang man
danh sai » dung sai, danh bat, hanh san
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu he » hieu ve, hiem he, hieu le
thu xa » thu xac, thu ha, thu xe
he nam » ha nam, nghe nam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang mai) or (lang mai)) hoi. hieu he nam thu xa ((danh sai) OR (danh dau)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang mai) OR (lang mai)) hoi. hieu he nam thu xa ((danh sai) OR (danh dau)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang mai) or (lang mai)) hoi. hieu he nam thu xa ((danh sai) OR (danh dau)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang mai) or (lang mai)) hoi. hieu he nam thu xa ((danh sai) OR (danh dau)) cua tre*.