Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
hieu van » hieu va, thien van, lieu va
va nhanh » va thanh, va hanh, va nhan
vu triet » ve triet, va triet, tu triet
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van dam » van nam, van dao, van dau
dam tu » nam tu, cam tu, tam tu

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 ky nang xa hoi. hieu van dam tu va nhanh hai ((vu triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu van dam tu va nhanh hai ((vu triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van dam tu va nhanh hai ((vu triet) OR (su triet))*.