Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
khai dung » khai ung, hai dung, kha dung
dan khai » dang khai, van khai, dang khoi
ly nang » ky nang, ly hang, ly vang
mai hoi » mai khoi, dai hoi, lai hoi
cau tuc » cau truc, cau tu, cau luc
so sach » so sanh, bo sach, co sach
su sach » vu sach
y nang » ky nang, v nang, may nang
va cau » van cau, va cac, va dau
xa dan » ca dan, xa dai, va dan

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) or (so sach)) ((y nang) OR (ly nang)) mai hoi. lieu va cau tuc xa dan khai dung tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ((y nang) OR (ly nang)) mai hoi. lieu va cau tuc xa dan khai dung tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ((y nang) OR (ly nang)) mai hoi. lieu va cau tuc xa dan khai dung tren*".