Perhaps you should try some spelling variations:
cuoc luc » coc luc, duoc lac, duoc luu
trinh ve » trinh he, trinh va, trinh vi
trang xa » trang va, trang ha, trong xa
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
ve cuoc » va cuoc, ve duoc, ve nuoc
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
tang xa » tang ma, lang xa, tang ha
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc 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 ty ((tang xa) or (trang xa)) hoi. hieu ve cuoc luc va ((tinh vi) or (trinh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((tang xa) OR (trang xa)) hoi. hieu ve cuoc luc va ((tinh vi) OR (trinh ve)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((tang xa) or (trang xa)) hoi. hieu ve cuoc luc va ((tinh vi) or (trinh ve)) cua tre*.