Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
duc manh » suc manh, duc anh, duc minh
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc phan
va co » vo co
vi va » vi van, vai va, vu va
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: thuat sach ky nang xa hoi. hieu va co ((((xuc van) OR (duc van))) or (duc manh)) hanh vi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang xa hoi. hieu va co ((((xuc van) OR (duc van))) OR (duc manh)) hanh vi va thiet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang xa hoi. hieu va co ((((xuc van) OR (duc van))) or (duc manh)) hanh vi va thiet*".