Perhaps you should try some spelling variations:
thien van » thi van
van hanh » van thanh, ban hanh, van anh
van cau » van dau, van hau, van chat
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
cau xuc » cam xuc, cau luc, cau truc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, ma hoa, me hoi

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 ty nang ((ma hoi) or (xa hoi)). thien van cau xuc van hanh ((vai cua) or (tri cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((ma hoi) OR (xa hoi)). thien van cau xuc van hanh ((vai cua) OR (tri cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((ma hoi) or (xa hoi)). thien van cau xuc van hanh ((vai cua) or (tri cua)) tre*.