Perhaps you should try some spelling variations:
sang tao » hang tai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
tao hoi » tao khoi, tao boi, tay hoi
ve cham » va cham, ve chat, vu cham
lam cua » lam chat
vu kham » vu khanh
duc van » duc va, duc tan, duc manh

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 _ sang tao hoi. hieu ((ve cham) or (vu kham)) duc van hanh ((lam cua) OR (nam cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ sang tao hoi. hieu ((ve cham) OR (vu kham)) duc van hanh ((lam cua) OR (nam cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ sang tao hoi. hieu ((ve cham) or (vu kham)) duc van hanh ((lam cua) OR (nam cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach _ sang tao hoi. hieu ((ve cham) or (vu kham)) duc van hanh ((lam cua) OR (nam cua)) te*.