Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
nhanh hai » nhanh thai, thanh hai, nhanh ha
hanh hai » thanh hai, hang hai, hanh tai
hieu van » hieu va, thien van, lieu va
cam tuc » cam xuc, cam tu, nam thuc
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van cam » van nam, van lam, van cau
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang ((ma hoi) or (xa hoi)). hieu van cam tuc va ((hanh hai) or (nhanh hai)) cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((ma hoi) OR (xa hoi)). hieu van cam tuc va ((hanh hai) OR (nhanh hai)) cau triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((ma hoi) or (xa hoi)). hieu van cam tuc va ((hanh hai) or (nhanh hai)) cau triet*.