Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
sach ky » sach y, sach ty, sach kem
va tinh » may tinh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
de cuu » de cua

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 ky) or (sac ky)) nang xa hoi. hieu ve cac xuc ((va thanh) OR (va tinh)) de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu ve cac xuc ((va thanh) OR (va tinh)) de cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang xa hoi. hieu ve cac xuc ((va thanh) OR (va tinh)) de cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang xa hoi. hieu ve cac xuc ((va thanh) OR (va tinh)) de cuu tre*.