Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cam tuc » cam xuc, cam tu, nam thuc
han tai » hang tai, nhan tai, van tai
dan tai » van tai, dan thi, ban tai
hoc sac » hoc sach, hoc cac, hoc mac
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
dan vai » dan va, dan vat, den vai
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sac ky nang xa hoi. hieu ve cam tuc va ((dan vai) or (((dan tai) or (han tai)))) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang xa hoi. hieu ve cam tuc va ((dan vai) OR (((dan tai) OR (han tai)))) va triet.
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang xa hoi. hieu ve cam tuc va ((dan vai) or (((dan tai) or (han tai)))) va triet*.