Perhaps you should try some spelling variations:
thien van » thi van
hanh dao » lanh dao, thanh dat, thanh dam
hieu van » hieu va, lieu va, hieu ve
vu sach » vu bach, su sach, vu khach
dao cua » dai cua, day cua, dan cua
va hanh » van hanh, va thanh, va danh
cac tuc » cac toc, cac tu, cac tac
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (so sach)) y nang ma hoi. ((hieu van) or (thien van)) cac tuc va hanh dao cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) y nang ma hoi. ((hieu van) OR (thien van)) cac tuc va hanh dao cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) y nang ma hoi. ((hieu van) or (thien van)) cac tuc va hanh dao cua tre*.