Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham sac » cham soc, pham sach, cap sac
thanh vi » hanh vi, thanh va, thanh ve
thu sach » tu sach, thuat sach, thuoc sach
lang van » dang van, tang van, hoang van
dat tren » dat trong, dua tren
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sac van » cac van, san van, sat van
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
cu tren » tu tren, dua tren
la tren » loai tren, dua tren, dau tren

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 ky lang van hoa. hieu ve cham sac van thanh vi ((cu tren) or (((la tren) OR (dat tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky lang van hoa. hieu ve cham sac van thanh vi ((cu tren) OR (((la tren) OR (dat tren))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky lang van hoa. hieu ve cham sac van thanh vi ((cu tren) or (((la tren) OR (dat tren))))*".