Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, le thanh
hieu van » hieu va, thien van, lieu va
hac thuc » hoc thuc, thach thuc, thuc thuc
va tinh » may tinh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ha thuc » va thuc, ha thuy, ha thu
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang xa hoi. hieu van ((hac thuc) OR (ha thuc)) ((va thanh) or (va tinh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. hieu van ((hac thuc) OR (ha thuc)) ((va thanh) OR (va tinh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang xa hoi. hieu van ((hac thuc) OR (ha thuc)) ((va thanh) or (va tinh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu van ((hac thuc) OR (ha thuc)) ((va thanh) or (va tinh)) vi cua triet*.