Perhaps you should try some spelling variations:
su sach » so sach, vu sach
nang ma » tang ma, sang ma, mang may
hanh di » hanh vi, hanh de, hang di
sach ty » sach y, sach tu, sach thu
tuc van » thuc van, truc van, duc van
di cua » dai cua, doi cua, de cua
va dau » va dao
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: su sach ty ((nang ma) OR (nang cao)) hoi. lieu va dau ((tuc van) or (tuc va)) hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang ma) OR (nang cao)) hoi. lieu va dau ((tuc van) OR (tuc va)) hanh di cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang ma) OR (nang cao)) hoi. lieu va dau ((tuc van) or (tuc va)) hanh di cua te*".