Perhaps you should try some spelling variations:
thien van » thi van
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
sach lo » sach dao, sach doi, sach hoi
xay hoi » xa hoi, tay hoi, cay phoi
van cam » van nam, van lam, van cau
va hanh » va thanh, va danh, ban hanh
su tien » su kien, su hien, tu tieng
sach o » sac o, sach y, mach o
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach o) OR (sach lo)) dang xay hoi. thien van cam xuc ((va hanh) or (van hanh)) vi su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach o) OR (sach lo)) dang xay hoi. thien van cam xuc ((va hanh) OR (van hanh)) vi su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach o) OR (sach lo)) dang xay hoi. thien van cam xuc ((va hanh) or (van hanh)) vi su tien".
• Adding a wildcard symbol may retrieve word variants: thu ((sach o) OR (sach lo)) dang xay hoi. thien van cam xuc ((va hanh) or (van hanh)) vi su tien*.