Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cac duc » cac du, cao duc, cac dac
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. ((((hieu ve) OR (hieu va))) or (thien van)) cac duc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. ((((hieu ve) OR (hieu va))) OR (thien van)) cac duc va hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. ((((hieu ve) OR (hieu va))) or (thien van)) cac duc va hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. ((((hieu ve) OR (hieu va))) or (thien van)) cac duc va hanh lai cua triet*.