Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
hanh dao » lanh dao, thanh dat, thanh dam
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
dao su » dao suu, dan su, cao su

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 (thuat sach)) ky nang xa hoi. thien van nam thuc dan hanh dao su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuat sach)) ky nang xa hoi. thien van nam thuc dan hanh dao su triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat sach)) ky nang xa hoi. thien van nam thuc dan hanh dao su triet*.