Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
hanh tri » thanh tri, hanh trinh, hanh triet
ve chat » va chat, van chat
nang ma » tang ma, sang ma, nang cao
ve cham » va cham, vu cham, ve chim
tu sac » tu sach, tu cac, tu san
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ma hoi. hieu ((ve cham) or (ve chat)) xuc va ((hanh tri) OR (hanh tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu ((ve cham) OR (ve chat)) xuc va ((hanh tri) OR (hanh tai)) va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoi. hieu ((ve cham) or (ve chat)) xuc va ((hanh tri) OR (hanh tai)) va thiet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu ((ve cham) or (ve chat)) xuc va ((hanh tri) OR (hanh tai)) va thiet*.