Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
hanh hai » thanh hai, nhanh hai, hang hai
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
hai cua » thai cua, dai cua, hoi cua
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
dang xa » dang xay, lang xa, dang ha
ty dang » ty xang, ky dang, ty hang
dam tu » nam tu, cam tu, tam tu
thuc » thu

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 xa hoi. hieu van ((((am thuc) or (dam tu))) or (nhan luc)) van hanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty dang xa hoi. hieu van ((((am thuc) OR (dam tu))) OR (nhan luc)) van hanh hai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty dang xa hoi. hieu van ((((am thuc) or (dam tu))) or (nhan luc)) van hanh hai cua triet*.