Perhaps you should try some spelling variations:
toc sac » toc sach, toc san, hoc sach
nang xa » nang x, lang xa, nang ma
ve cuac » ve cac, ve cuoc, ve chuan
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
ve cua » le cua, de cua, te cua
dao va » dao van, tao va, do va
vi su » ve su, ki su, oi su

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: toc sac ky nang xa hoi. hieu ((ve cua) OR (ve cuac)) dao va hanh ((vi su) OR (va su)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky nang xa hoi. hieu ((ve cua) or (ve cuac)) dao va hanh ((vi su) OR (va su)) triet~".
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. hieu ((ve cua) or (ve cuac)) dao va hanh ((vi su) OR (va su)) triet*.