Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh doi » thanh loi, thanh moi, thanh do
thu sach » tu sach, thuat sach, thuoc sach
hieu tuc » hieu thuc, hieu luc, hieu thuoc
cham duc » pham duc, cham soc, pham duy
dau tren » dau tien, dat tren, dau tieng
nang xa » nang x, lang xa, nang ma
hieu tu » chieu tu, hien tu, lieu tu
duc van » duc va, duc tan, duc manh
doi dau » doan dau
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach v nang xa hoi. ((hieu tu) OR (hieu tuc)) cham duc van thanh doi dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach v nang xa hoi. ((hieu tu) OR (hieu tuc)) cham duc van thanh doi dau tren".
• Adding a wildcard symbol may retrieve word variants: thu sach v nang xa hoi. ((hieu tu) OR (hieu tuc)) cham duc van thanh doi dau tren*.