Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
chat tuc » chat xuc, luat tuc, chat huu
hanh dai » hanh tai, hanh dao, vanh dai
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky ((nang xa) OR (nang x)) hoi. hieu va chat tuc va hanh dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky ((nang xa) OR (nang x)) hoi. hieu va chat tuc va hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((nang xa) OR (nang x)) hoi. hieu va chat tuc va hanh dai cua te*.