Perhaps you should try some spelling variations:
chieu thien » chieu chien, hieu hien
thien hach » thien thanh, hien hanh
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hach xuc » thach duc, hanh xu, cach xu
va hanh » va thanh, va danh, ban hanh
nang ho » nang hoc, nang co, tang ho
ty nang » ky nang, ty xang, ty hang
huu tre » huu tri, cuu tre, huu them
ho hoi » hoc hoi, hoa hoi, hoi hoi
va huu » vu huu

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) or (toc sach)) ty nang ho hoi. chieu thien hach xuc ((va hanh) OR (van hanh)) va huu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty nang ho hoi. chieu thien hach xuc ((va hanh) OR (van hanh)) va huu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ty nang ho hoi. chieu thien hach xuc ((va hanh) OR (van hanh)) va huu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty nang ho hoi. chieu thien hach xuc ((va hanh) OR (van hanh)) va huu tre*.