Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
dang xay » dang van, van xay
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
de cua » le cua, te cua, dieu cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) thieu ((nang xa) or (dang xay)) hoi. hieu va cham tuc va hanh de cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) thieu ((nang xa) OR (dang xay)) hoi. hieu va cham tuc va hanh de cua tu.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) thieu ((nang xa) or (dang xay)) hoi. hieu va cham tuc va hanh de cua tu*.