Perhaps you should try some spelling variations:
hanh gian » thanh gian, thanh giang, manh giang
gian cua » gian xu, ban cua
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
phan dau » phan tu, hang dau
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
ve phan » va phan, ke phan, ve phat
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
dau va » dau ve, lau va

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))) or (doc sach)) ky nang ma hoi. hieu ve phan dau va hanh gian cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sach) OR (toc sach))) OR (doc sach)) ky nang ma hoi. hieu ve phan dau va hanh gian cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((te sach) OR (toc sach))) or (doc sach)) ky nang ma hoi. hieu ve phan dau va hanh gian cua tre*".