Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
suc thanh » duc thanh, su thanh, phuc thanh
tuc thanh » thuc thanh, duc thanh, tac thanh
hieu va » lieu va, hieu qua
hieu ca » hieu cac, hieu cua, hieu xa
nang xa » nang x, lang xa, nang ma
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di 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 y nang xa hoi. ((hieu ca) or (hieu va)) nhan ((suc thanh) OR (tuc thanh)) anh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((hieu ca) OR (hieu va)) nhan ((suc thanh) OR (tuc thanh)) anh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((hieu ca) or (hieu va)) nhan ((suc thanh) OR (tuc thanh)) anh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu ca) or (hieu va)) nhan ((suc thanh) OR (tuc thanh)) anh vi cua triet*.