Perhaps you should try some spelling variations:
thien van » thi van
va triet » va thiet, va trien, ve triet
te sach » toc sach
hanh va » hang va, hanh vi
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van cam » van nam, van lam, van cau
sach ky » sac ky, sach y, sach ty
tuc va » thuc va, truc va, duc va
cua tu » cua tuc, cua su, cua cu

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

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