Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
cam tu » cam thu, nam tu, dam tu
kien » bien, vien, tien

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang x ho. hieu van cam tu ((gia thanh) or (va hanh)) ki ((ve triet) or (su kien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x ho. hieu van cam tu ((gia thanh) OR (va hanh)) ki ((ve triet) OR (su kien)).
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x ho. hieu van cam tu ((gia thanh) or (va hanh)) ki ((ve triet) or (su kien))*.