Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuat sac » thuat san, thuat tac, thuat mach
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
ve cam » ve cac, va cam, ve cai

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 ((ve cam) or (ve cham)) luc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cham)) luc va hanh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((ve cam) or (ve cham)) luc va hanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: ((thuat sac) OR (thuat sach)) ky nang xa hoi. hieu ((ve cam) or (ve cham)) luc va hanh vi cua viet*.