Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hieu van » hieu va, thien van, lieu va
van chat » cao chat
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
ty nang » ty xang, ty hang, ly nang
tuc gia » duc gia, toc gia, luc gia
toan va » doan va, tran van, toan ban

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 ((ty nang) or (ky nang)) xa hoi. hieu van chat ((tuc gia) OR (tac gia)) thanh toan va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ky nang)) xa hoi. hieu van chat ((tuc gia) OR (tac gia)) thanh toan va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) or (ky nang)) xa hoi. hieu van chat ((tuc gia) OR (tac gia)) thanh toan va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ky nang)) xa hoi. hieu van chat ((tuc gia) OR (tac gia)) thanh toan va triet*.