Perhaps you should try some spelling variations:
chu treo » cau treo, cau tren, chu tri
danh hai » dang hai, lanh hai, manh hai
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
va danh » va dinh, va dan, va hanh
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ty xang, ty hang, ly nang
cu tren » tu tren, dua tren
tuc va » thuc va, truc va, tuc xa

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) OR (ky nang)) mai hoi. hieu van cam tuc va danh hai ((chu treo) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ky nang)) mai hoi. hieu van cam tuc va danh hai ((chu treo) OR (cu tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ky nang)) mai hoi. hieu van cam tuc va danh hai ((chu treo) or (cu tren))*".