Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
thien van » thi van
dat khanh » van khanh, duy khanh
khanh vai » khanh van, hanh vi, hanh va
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
tuc dat » tu dat, tuc dan, tuc hat
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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 ky tang ma hoi. thien van cam tuc dat khanh vai ((cau tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky tang ma hoi. thien van cam tuc dat khanh vai ((cau tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thuat sac ky tang ma hoi. thien van cam tuc dat khanh vai ((cau tren) or (cua triet))*.