Perhaps you should try some spelling variations:
thanh lap » phan lap, thanh hai, thanh van
va triet » va thiet, va trien, ve triet
chat luc » chat xuc, chat lua, nhan luc
hieu van » hieu va, thien van, lieu va
van chat » cao chat
ty nang » ky nang, ty xang, ty hang
luc van » luoc van, luu van, duc van
vu sach » vu bach, vu khach
su sach » so sach
x hoi » xa hoi, o hoi, x ho

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