Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
vu sach » vu bach, vu khach
su sach » so sach
va cam » va cham, va cac, va cao
cam tu » cam thu, nam tu, dam tu
ki su » ky su

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) or (su sach)) ky nang x ho. lieu va cam tu ((va thanh) or (van hanh)) ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky nang x ho. lieu va cam tu ((va thanh) OR (van hanh)) ki su triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ky nang x ho. lieu va cam tu ((va thanh) or (van hanh)) ki su triet*.