Perhaps you should try some spelling variations:
thanh chua » thanh chu, tranh chua, thanh hoa
thanh cha » thanh ha, thanh nha, thanh phan
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
loc van » luoc van, hoc van, lo van
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
cam loc » cam lo

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