Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
van hanh » van thanh, ban hanh, van anh
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
tu sach » su sach, te sach, tu cach
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
di cua » dai cua, doi cua, de cua

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) or (thu sach)) ky nang xa hoi. ((hieu ve) or (hieu va)) cam tuc van hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cam tuc van hanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. ((hieu ve) or (hieu va)) cam tuc van hanh di cua triet*.