Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
vien cac » vien bach, vien dai, vien da
viet cua » viec cua, viet ca, viet qua
hoc sach » hoc sinh, hoc cac, hoc anh
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van anh » van thanh, tuan anh, van minh
lo van » le van, vo van, so van
ve cac » va cac
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ty nang xa hoi. hieu ((ve cac) OR (vien cac)) lo van anh viet cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) or (hoc sach)) ty nang xa hoi. hieu ((ve cac) OR (vien cac)) lo van anh viet cua te~".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) ty nang xa hoi. hieu ((ve cac) OR (vien cac)) lo van anh viet cua te*.