Perhaps you should try some spelling variations:
thien van » thi van
tham thuc » nham thuc, tam thuc, thai thuc
pham thuc » phap thuc, pham chuc, nham thuc
nam thuc » nam thuoc, am thuc, nam thu
cau tren » cu tren, dau tren, ca tren
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cau » va cau, ve cau, di cau

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. thien van ((tham thuc) or (((pham thuc) or (nam thuc)))) va hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. thien van ((tham thuc) OR (((pham thuc) OR (nam thuc)))) va hanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. thien van ((tham thuc) or (((pham thuc) or (nam thuc)))) va hanh vi cau tren*.