Perhaps you should try some spelling variations:
tinh vai » tinh va, tinh hai, tinh bai
su sach » so sach, vu sach
nang xa » nang ma, mang xa, ang xa
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
va tinh » may tinh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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 y ((((nang xa) OR (nang x))) or (lang xa)) hoi. hieu va pham duc va tinh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((((nang xa) OR (nang x))) OR (lang xa)) hoi. hieu va pham duc va tinh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((((nang xa) OR (nang x))) or (lang xa)) hoi. hieu va pham duc va tinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y ((((nang xa) OR (nang x))) or (lang xa)) hoi. hieu va pham duc va tinh vai cua tre*.