Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
thu sach » tu sach, thuat sach, thuoc sach
dau tren » dau tien, dat tren, dau tieng
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
duc van » duc va, duc manh, duc phan
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 ve cham ((duc van) OR (duc tan)) thanh doi dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach v nang xa hoi. hieu ve cham ((duc van) OR (duc tan)) thanh doi dau tren".
• Adding a wildcard symbol may retrieve word variants: thu sach v nang xa hoi. hieu ve cham ((duc van) OR (duc tan)) thanh doi dau tren*.