Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
kho lang » kho tang, cho lang, tho lang
hanh dan » thanh dan, hanh san, canh dan
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
su sach » vu sach
nam xuc » cam xuc, nam xua, nam thuc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
so sach » so sanh, bo sach, co sach
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) kho lang xa hoi. hieu va nam xuc van hanh dan ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) kho lang xa hoi. hieu va nam xuc van hanh dan ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) kho lang xa hoi. hieu va nam xuc van hanh dan ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) kho lang xa hoi. hieu va nam xuc van hanh dan ((cua triet) OR (va triet))*.