Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
hanh vien » thanh vien, hanh kien, thanh nien
bach tro » ban tro, bach mao, bach thu
thu xac » thau xay
nang xa » nang x, lang xa, nang ma
qua cau » quan cau, qua cac, qua ca
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, ban hanh
xac ky » cac ky, sac ky, bac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu xac ky nang xa hoi. hieu qua cau truc va hanh vien ((((bach tro) OR (cac tro))) or (bach tuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu xac ky nang xa hoi. hieu qua cau truc va hanh vien ((((bach tro) OR (cac tro))) OR (bach tuoc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu xac ky nang xa hoi. hieu qua cau truc va hanh vien ((((bach tro) OR (cac tro))) or (bach tuoc))".
• Adding a wildcard symbol may retrieve word variants: thu xac ky nang xa hoi. hieu qua cau truc va hanh vien ((((bach tro) OR (cac tro))) or (bach tuoc))*.