Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
pham duy » pham duc
cham duc » pham duc, cham soc, phan duc
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
hai cua » thai cua, dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((nang xa) or (nang x)) hoi. hieu ve ((cham duc) or (pham duy)) van hanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang x)) hoi. hieu ve ((cham duc) OR (pham duy)) van hanh hai cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang x)) hoi. hieu ve ((cham duc) or (pham duy)) van hanh hai cua triet*.