Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
va triet » va thiet, va trien, ve triet
chat duc » chat xuc, chat doc, chet duoc
qua chat » qua nhat, qua cham, luan chat
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
te sach » toc sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuat san)) ky ((nang xa) OR (nang ma)) hoi. hieu qua chat duc va dinh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat san)) ky ((nang xa) OR (nang ma)) hoi. hieu qua chat duc va dinh vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuat san)) ky ((nang xa) OR (nang ma)) hoi. hieu qua chat duc va dinh vi va triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat san)) ky ((nang xa) OR (nang ma)) hoi. hieu qua chat duc va dinh vi va triet*.