Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
hieu van » thien van, lieu va, hieu ve
xa khanh » xa thanh, van khanh, dat khanh
xa hanh » xa thanh, va hanh, da hanh
lai cua » dai cua, hai cua, lai chau
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
ty dang » ty xang, ky dang, ty hang
cau tu » dau tu, cau truc

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 dang xay hoi. ((hieu van) or (hieu va)) cau tu ((xa hanh) or (xa khanh)) lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty dang xay hoi. ((hieu van) OR (hieu va)) cau tu ((xa hanh) OR (xa khanh)) lai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty dang xay hoi. ((hieu van) or (hieu va)) cau tu ((xa hanh) or (xa khanh)) lai cua triet*.