Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat luoc » chat luong, chat hoc, chat xuc
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
cua tre » cua te, cuu tre, dua tren
hanh di » hanh vi, hanh de, hang di
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
va chat » van chat, va phat, cao chat
y nang » ky nang, ly nang, v nang

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