Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
dang hai » dang khai, hang hai, dung hai
manh hai » minh hai, thanh hai, van hai
hieu van » hieu va, thien van, lieu va
lanh hai » thanh hai, lang chai, lanh dao
su sach » so sach, vu sach
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
nang ma » tang ma, sang ma, nang cao
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 ((dang hai) or (((lanh 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 ((dang hai) OR (((lanh 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 ((dang hai) or (((lanh hai) or (manh hai)))) cau tren*.