Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
vu kham » vu khanh
lam cua » nam cua, lam chat
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, vu cham
tay hoi » tay ho, tay thai
tao hoi » tao khoi, tao boi, thao hoc
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: tu sach _ sang ((tao hoi) OR (tay hoi)). hieu ((ve cham) or (vu kham)) duc van hanh lam cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ sang ((tao hoi) OR (tay hoi)). hieu ((ve cham) OR (vu kham)) duc van hanh lam cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ sang ((tao hoi) OR (tay hoi)). hieu ((ve cham) or (vu kham)) duc van hanh lam cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach _ sang ((tao hoi) OR (tay hoi)). hieu ((ve cham) or (vu kham)) duc van hanh lam cua te*.