Perhaps you should try some spelling variations:
cuc triet » cua triet, su triet, cac trieu
thu sach » tu sach, thuat sach, thuoc sach
vanh tai » van tai, hanh tai, anh tai
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 ky nang xa hoi. hieu va cam ((xuc va) OR (tuc va)) vanh tai cuc triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu va cam ((xuc va) OR (tuc va)) vanh tai cuc triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu va cam ((xuc va) OR (tuc va)) vanh tai cuc triet*.