Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
long ha » dong ha, cong ha, dong hoa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cham tu » pham tu, cam tu, chai tu
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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 y ((nang xa) or (((lang ha) OR (long ha)))) hoi. hieu ve cham tu va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (((lang ha) OR (long ha)))) hoi. hieu ve cham tu va hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) or (((lang ha) OR (long ha)))) hoi. hieu ve cham tu va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (((lang ha) OR (long ha)))) hoi. hieu ve cham tu va hanh vi cuu tre*.