Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
van hanh » ban hanh, van anh, van ban
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
hoc sac » hoc sach, hoc cac, hoc mac
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sac ky nang ma hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vi ((cua te) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang ma hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vi ((cua te) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ky nang ma hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vi ((cua te) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang ma hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vi ((cua te) or (su triet))*.