Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
su triet » su viet, su tien, ve triet
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
hang ke » thong ke, hanh kem, nhung ke
ve cam » ve cham, ve cac, va cam
ke su » ke suu, ve su, ky su

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 (nang x)) hoi. hieu ve cam ((xuc van) OR (xuc ban)) hang ke su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang xa) OR (nang x)) hoi. hieu ve cam ((xuc van) OR (xuc ban)) hang ke su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y ((nang xa) or (nang x)) hoi. hieu ve cam ((xuc van) OR (xuc ban)) hang ke su triet*".