Perhaps you should try some spelling variations:
thien van » thi van
cau theo » cau thi, cau tao
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, lieu va, hieu ve
tru nang » tra nang, tri nang, truc nano
xuc van » duc van, luc van, vuc van
tu lanh » tu hanh, tu lenh, tu manh
hanh ve » hanh vi, hanh va, hanh kem
te sach » toc sach
ve cau » ke cau, va cau, ve cac

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 ((tu lanh) or (tru nang)) xa hoi. ((hieu van) or (thien van)) cam xuc van hanh ve cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu lanh) OR (tru nang)) xa hoi. ((hieu van) OR (thien van)) cam xuc van hanh ve cau theo.
• Adding a wildcard symbol may retrieve word variants: te sach ((tu lanh) or (tru nang)) xa hoi. ((hieu van) or (thien van)) cam xuc van hanh ve cau theo*.