Perhaps you should try some spelling variations:
thien van » thi van
su triet » su viet, su tien, ve triet
va danh » va dinh, va hanh, dia danh
van cau » van dau, van hau, van chat
su sach » vu sach
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
cau tuc » cau truc, cau tu, cau luc
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
hai su » hai vu, lai su, hai so

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) y nang xa hoi. thien van cau tuc ((va danh) OR (va dan)) hai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang xa hoi. thien van cau tuc ((va danh) OR (va dan)) hai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) y nang xa hoi. thien van cau tuc ((va danh) OR (va dan)) hai su triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y nang xa hoi. thien van cau tuc ((va danh) OR (va dan)) hai su triet*.