Perhaps you should try some spelling variations:
dang khai » dang khoi, quang khai, dang thi
thien van » thi van
hau treo » cau treo, cau theo, dau tren
dang hai » hang hai, dung hai, dong hai
sach ly » sach y, sach lo, sach ty
su sach » so sach, vu sach
cao hoi » cau hoi, cao hoc, tao hoi
van cam » van nam, van lam, van cau
ly nang » ky nang, ly hang, ly vang
cam tuc » cam xuc, cam tu, nam thuc
tuc va » thuc va, truc va, tuc xa
co hoi » co hoc, co loi

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 ly nang ((cao hoi) or (co hoi)). thien van cam tuc va ((dang hai) OR (dang khai)) hau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang ((cao hoi) OR (co hoi)). thien van cam tuc va ((dang hai) OR (dang khai)) hau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly nang ((cao hoi) or (co hoi)). thien van cam tuc va ((dang hai) OR (dang khai)) hau treo".
• Adding a wildcard symbol may retrieve word variants: su sach ly nang ((cao hoi) or (co hoi)). thien van cam tuc va ((dang hai) OR (dang khai)) hau treo*.