Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
hanh va » hang va, hanh vi
ma hoi » mai hoi, xa hoi, ma hoa
va va » va van, va vua, va vai
thiet* » thieu*

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) ky nang ma hoi. hieu ve chat ((xuc van) or (duc van)) hanh va va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang ma hoi. hieu ve chat ((xuc van) OR (duc van)) hanh va va thiet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang ma hoi. hieu ve chat ((xuc van) or (duc van)) hanh va va thiet*".