Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
hoc sac » hoc sach, hoc cac, hoc mac
cau xuc » cam xuc, cau luc, cau truc
tai cua » thai cua, tai cuc, tri cua
va hanh » va thanh, va danh, ban hanh
van cau » van dau, van hau, van chat
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
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) or (nang x)) hoi. hieu van cau xuc ((va hanh) or (van hanh)) tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky ((nang ma) OR (nang x)) hoi. hieu van cau xuc ((va hanh) OR (van hanh)) tai cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sac ky ((nang ma) or (nang x)) hoi. hieu van cau xuc ((va hanh) or (van hanh)) tai cua te*.