Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
sach ly » sach lo, sach ty, sach hay
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, dua tren
cac tu » cac thu, cach tu, cac du

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ly) or (sach y)) nang xa hoi. thien van cac tu va tinh vi ((cua triet) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ly) OR (sach y)) nang xa hoi. thien van cac tu va tinh vi ((cua triet) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: vu ((sach ly) or (sach y)) nang xa hoi. thien van cac tu va tinh vi ((cua triet) or (cua tre))*.