Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
thanh de » hanh de, thanh ve, thanh le
nang dau » hang dau, xang dau, nang du
thanh do » thanh pho, thanh hoa, thanh dat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cac dac » cac dan, cac dai, cac bac
hieu ve » hieu va, hieu van
dau hoi » cau hoi, dai hoi, dan hoi
cuu tre » cua tre, cau tren, cau treo
dac va » duc va, day va, dat va
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang dau hoi. hieu ve cac dac va ((thanh de) or (((thanh do) OR (thanh loi)))) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang dau hoi. hieu ve cac dac va ((thanh de) OR (((thanh do) OR (thanh loi)))) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang dau hoi. hieu ve cac dac va ((thanh de) or (((thanh do) OR (thanh loi)))) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang dau hoi. hieu ve cac dac va ((thanh de) or (((thanh do) OR (thanh loi)))) cuu tre*.