Perhaps you should try some spelling variations:
hanh voi » hanh vi, hanh noi, hanh moi
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
tu tren » tu truyen, tu tieng, tu trong
nang xa » lang xa, nang ma, mang xa
va dao » ca dao
voi tu » loi tu, hoi tu, moi tu

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 ky ((nang xa) or (nang x)) hoi. hieu ((va dau) OR (va dao)) truc va hanh voi tu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (nang x)) hoi. hieu ((va dau) OR (va dao)) truc va hanh voi tu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (nang x)) hoi. hieu ((va dau) OR (va dao)) truc va hanh voi tu tren".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (nang x)) hoi. hieu ((va dau) OR (va dao)) truc va hanh voi tu tren*.