Perhaps you should try some spelling variations:
manh quan » manh tuan, anh quan, minh quang
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
quan lai » quan li, quan tai, quan hai
duc manh » suc manh, duc anh, duc minh
cuu tre » cua tre, cau treo
tu sach » thu sach, te sach, tu cach
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
su sach » so sach, vu sach
nam duc » nam duoc, pham duc, nam thuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ty lang xa hoi. hieu van nam duc manh quan lai ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty lang xa hoi. hieu van nam duc manh quan lai ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty lang xa hoi. hieu van nam duc manh quan lai ((cuu tre) or (cau tren))*.