Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dang thai » dang thi, dang hai, dang khai
bac nuoc » cac nuoc, bach tuoc, sach nuoc
nuoc van » nuoc va, nuoc san, luoc van
van dang » van dong, van dung, van nang
thai cua » than cua, tai cuc, tri cua
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
thi van » thi lan, thi hanh, thi nang
van bac » van ban, van bao, van hac
cua tre » cua te, cuu tre, cua triet

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 y ((nang xa) OR (lang xa)) hoi. thi van bac nuoc van dang thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y ((nang xa) OR (lang xa)) hoi. thi van bac nuoc van dang thai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((nang xa) OR (lang xa)) hoi. thi van bac nuoc van dang thai cua tre*.