Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
pham thuc » phap thuc, pham chuc, nham thuc
vat thanh » dat thanh, gat thanh, tat thanh
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
vat hanh » van hanh, va hanh, nhat hanh
nang xa » nang x, lang xa, nang ma
hieu vi » hieu voi, hieu va, hieu ve
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach thieu nang xa hoi. hieu vi pham thuc ((vat hanh) OR (vat thanh)) vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach thieu nang xa hoi. hieu vi pham thuc ((vat hanh) OR (vat thanh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: doc sach thieu nang xa hoi. hieu vi pham thuc ((vat hanh) OR (vat thanh)) vai cua triet*.