Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
lap cua » lai cua, tap cua, lam cua
so hai » son hai, su hai, so ha
o hai » co hai, o lai, _ hai

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 nang ((o hai) or (so hai)). hieu van cau duc va thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((o hai) OR (so hai)). hieu van cau duc va thanh lap cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((o hai) or (so hai)). hieu van cau duc va thanh lap cua triet*.