Perhaps you should try some spelling variations:
su triet » su viet, su tien
chat huu » pham huu
ve triet » va trien
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
hieu du » hien du, hieu su, hiem du
du chat » duoc chat, dung chat, doc chat
sach ly » sach y, sach lo, sach ty
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
tu sach » thu sach, su sach, te sach

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 ly nang xa hoi. hieu du chat huu ((van hanh) or (ban hanh)) gi ((ve triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. hieu du chat huu ((van hanh) OR (ban hanh)) gi ((ve triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang xa hoi. hieu du chat huu ((van hanh) or (ban hanh)) gi ((ve triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. hieu du chat huu ((van hanh) or (ban hanh)) gi ((ve triet) OR (su triet))*.