Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat mach
thuat tac » thuat tach, thuat tao, thuat tai
dinh vai » dinh van, dinh vi, dinh va
vai cua » dai cua, hai cua, lai cua
ky mang » ky nang, ke mang, ky dang
may hoa » may khoa, ma hoa, day hoa
va dinh » van dinh, va kinh, va tinh
ve cham » va cham, ve chat, vu cham
tuc va » thuc va, truc va, tuc xa
ve cac » va cac, vien cac
cua cu » cua chu, cua cau, cua su

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 tac)) ky mang may hoa. hieu ((ve cac) or (ve cham)) tuc va dinh vai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sac) OR (thuat tac)) ky mang may hoa. hieu ((ve cac) OR (ve cham)) tuc va dinh vai cua cu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sac) OR (thuat tac)) ky mang may hoa. hieu ((ve cac) or (ve cham)) tuc va dinh vai cua cu*".