Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh hai » dang hai, lanh hai, danh hau
manh hai » lanh hai, minh hai, thanh hai
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
y nang » ky nang, ly nang, v nang
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: su sach y nang ma hoi. hieu van cam tuc xa ((danh hai) or (manh hai)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. hieu van cam tuc xa ((danh hai) OR (manh hai)) cau tren.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu van cam tuc xa ((danh hai) or (manh hai)) cau tren*.