Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
chat luc » chat xuc, chat lua, nhan luc
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, dua tren
luc van » luoc van, luu van, duc van
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
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: ((su sach) or (thu sach)) y nang ma hoi. hieu va chat luc van hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) y nang ma hoi. hieu va chat luc van hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) y nang ma hoi. hieu va chat luc van hanh vi ((cua tre) or (cua triet))*.