Perhaps you should try some spelling variations:
hieu hieu » hien hieu, hieu hien, thien hieu
hanh vai » hanh vi, hanh va, hanh tai
hieu cac » hieu luc, hieu va, hieu van
su sach » so sach, vu sach
nang xa » nang x, nang ma, mang xa
vai cua » dai cua, hai cua, lai cua
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
lo van » le van, vo van, so van
cua te » cua tu
lo va » lao va, ly va, le va

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 ky ((nang xa) OR (lang xa)) hoi. hieu hieu cac ((lo va) or (lo van)) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang xa)) hoi. hieu hieu cac ((lo va) OR (lo van)) hanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) OR (lang xa)) hoi. hieu hieu cac ((lo va) or (lo van)) hanh vai cua te*".