Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
thanh do » thanh de, thanh pho, thanh hoa
cau tren » cu tren, dau tren, ca tren
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van cam » van nam, van lam, van cau
xuc va » duc va, tuc va, luc va
do cau » dao cau, bo cau, co cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) OR (hoc sach)) ky tang xa hoi. hieu van cam xuc va thanh do cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) ky tang xa hoi. hieu van cam xuc va thanh do cau tren".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) ky tang xa hoi. hieu van cam xuc va thanh do cau tren*.