Perhaps you should try some spelling variations:
sach tham » sach nha
tan hanh » tan thanh, tang hanh, toan hanh
hanh lai » hanh lam, hanh tai, thanh lap
va trien » va truyen, va thiet, va tuyen
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
va pham » van pham, va phat, va phap
lai va » loai va, mai va, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((((sach ty) OR (sach y))) or (sach tham)) nang xa hoi. lieu va pham duc tan hanh lai va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ty) OR (sach y))) OR (sach tham)) nang xa hoi. lieu va pham duc tan hanh lai va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach ty) OR (sach y))) or (sach tham)) nang xa hoi. lieu va pham duc tan hanh lai va trien".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ty) OR (sach y))) or (sach tham)) nang xa hoi. lieu va pham duc tan hanh lai va trien*.