Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuat sac » thuat san, thuat tac, thuat mach
truoc va » truc va, thuoc va, truong va
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
va lam » van lam
va lap » va dap
vi hoa » voi hoa, vi hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((va lam) or (va lap)) truoc va hanh vi hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((va lam) OR (va lap)) truoc va hanh vi hoa viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((va lam) or (va lap)) truoc va hanh vi hoa viet".
• Adding a wildcard symbol may retrieve word variants: ((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((va lam) or (va lap)) truoc va hanh vi hoa viet*.