Perhaps you should try some spelling variations:
kham tuc » nham thuc, pham thuc, kham cuoc
ve triet » va trien, su triet
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
vi ve » va ve, gi ve, ve ve

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 (te sach)) y nang xa hoi. hieu vu kham tuc va hanh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) y nang xa hoi. hieu vu kham tuc va hanh vi ve triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) y nang xa hoi. hieu vu kham tuc va hanh vi ve triet*.